Diego froze when Victoria appeared in his den. It had been months since she last came into the home of Zorro. When they first married, she often helped him dress before he left and was waiting to hear of his adventure when he came home. He noticed the look on her face.

"Is something wrong, Victoria? Father—"

She shook her head, allowing more of her hair to fall from the bun. His fingers itched to run his fingers through her hair, freeing all of it from its prison. He loved when it flowed freely around her shoulders.

"I just came from the pueblo," she said.

Diego could not stop his muscles from tensing. Was she here to confess some indiscretion with Raul? He realized in that moment that he never wanted to know if his suspicions were correct. He spent his entire life looking for truths, had risked his life for over a decade fighting for justice, but where Victoria was concerned, Diego wanted to believe that she loved him more than all others. Even if it was a lie.

"And—"

"There was a lady there. I've noticed her a few nights in the pueblo."

"You think she's a danger to everyone? A thief perhaps."

Victoria's hand grasped over her stomach. "No, I don't think she's dangerous to the people in Los Angeles. I think she's a danger to Zorro."

Diego frowned, her uncharacteristic fear leaving him confused and uncertain. "You think she's been hired by the alcalde? You believe she has some skill with a rifle or a blade?"

"No," Victoria said, looking at everything in the cave but him. "No, I don't know. She might have been, but from her appearance I don't think she would have the money for guns or for swords."

He took a careful step forward, as if she were a wounded wolf. "Then why do you—"

"I think she's loco."

"Loco?" It was term he and Victoria were careful in using. A friend of his father died last year, but not before suffering weakness in his mind. Diego remembered watching his father's face as Don Carlito spent an hour complaining about a lazy worker. Alejandro's distress had been easy for him to see, but he hadn't understood. Not until Don Alejandro told him that the worker Carlito was complaining of died over 15 years previously.

"She talked about trusting you with the lives of everyone in the world. She didn't know if she could take that chance."

They stared at each other for a moment. Diego broke the silence: "I barely can help in Los Angeles. I doubt anyone would trust me with the world."

Victoria nibbled on her bottom lip. "She acted as if you were a threat."

His hands ached to reach for her, to stroke her shoulder in comfort. His arms ached to hold her close to him. "Victoria—"

The words he yearned to speak would not pass his lips. Instead, he asked. "How did you end up talking to her?"

"I took her a bowl of soup after the tavern closed. I noticed her sitting next to the church, watching as people left the plaza. I couldn't bear the thought of her being hungry."

Her compassion was a part of what he loved about her. However, fear gripped his heart. His wife and his child. He hadn't been in Los Angeles to protect them tonight. Instead he had been looking for clues in the mysterious cow deaths still plaguing the countryside. "Victoria, did you not think before you approached her? You know—"

"That it's not proper."

Diego was surprised by her words. "Well, it's not proper—"

"Good night, Diego. I just wanted to warn you about the woman." Victoria turned to leave him. She stopped. Without even turning to look at him, she said, "Please be careful."

Diego watched her go, unsure what to say or do. Would he ever find the words he needed to say to her?

ZZZ

"I have not seen you in some time, Don Diego," Doña Tasia said as she met him outside the tavern door.

Diego had to swallow once before he could speak. "I have been busy at the ranchero."

"Have you?" she asked with that knowing smile on her lips. Those lips were as full and moist as usual. Their ruby red color glistened in the moonlight. "But even busy ranchers must eat. You must join me for dinner tomorrow night."

Every part of Diego's body knew that was a horrible idea. "I'm not—"

She laid her hand on his chest. He wondered if she could feel the beat of his heart speed up beneath that hand. Her smile told him that the answer was yes. "Please."

He wondered if the smile on his face looked as ill as he felt. "Of course," he said, even as his conscience loudly protested.

"We shall expect you tomorrow night," she said. A brief nod and she was gone. Diego watched her leave and wondered why he feared her more than he feared the alcalde.

A large speeding object slammed into his side, pushing him into the tavern wall. "Oh, I-I'm s-s-so s-sorry, D-Don Diego," Mendoza sputtered from the ground as he struggled to stand.

Diego offered him a hand. "What's wrong, Sergeant?" he asked as he rubbed his sore shoulder. As many times as they had fought, Mendoza had never managed to hurt him until tonight. Diego would laugh if he had the energy.

"I-I—Nothing. N-nothing is wrong."

"Mendoza—"

The sergeant looked over Diego's shoulder into the darkness beyond. "I was just—"

"Mendoza," Diego said calmly laying a hand on his friend's shoulder. "It's me."

The trembling man closed his eyes and then took a deep breath. He looked around to see if they were alone and then leaned in closer to Diego. "I saw him. Again."

"Saw who—" Diego started to ask before remembering the ghost that had haunted a garden one night. "You saw Ramone."

"Sí," he squeaked.

"Sergeant—"

Mendoza crossed himself. "I know what I saw. He talked to me!"

Any amusement Diego felt left him immediately. "He talked to you?"

Mendoza's eyes were wild, but his nod was firm and confident. "Sí," he whispered.

"His brother—"

"Is in a prison in Guadalajara," Mendoza said as he wiped his brow with a large handkerchief.

"He could have-"

"No," Mendoza sighed. "I sent a messenger to the warden. He is still there."

"You sent a messenger?" Diego was both amused and awed. Mendoza did not like extra work. Which only showed how frightened he was by his "ghost". "Ramone is dead, Mendoza."

Somehow the sergeant managed to become even paler. "I know. But somehow he stood in front of me and talked to me tonight."

Diego found himself leaning against the tavern. "What did he say?"

A small frown crossed the terrified face. "He asked me questions."

"Questions?"

"About the past. Like he remembered it but the memories were not too clear."

Diego shook his head. "Mendoza, you buried—"

Mendoza yanked at his collar. "No, Don Diego, I didn't."

For a brief moment, Diego felt the world tilt beneath him. "You didn't stay to bury him."

"We never found the body," he whispered.

"What?"

"Everything was so confused that day, but Zorro told me—"

Diego shook his head, old familiar images racing through his head. "He fell from—"

"I know! Zorro told me, but when I went there, his body was gone."

Diego struggled to breathe. "You think he's alive?"

Mendoza looked stunned by the suggestion. "I—I don't think what I talked to tonight was alive, Don Diego."

"What?" Diego straightened, suddenly filled with fear. Ramone was dangerous before, but a Ramone who knew his secret was dangerous to everyone Diego loved. "It makes more sense that he fell, hit his head, developed memory—"

Mendoza gulped. "I was watching carefully, Don Diego. He wasn't breathing."

ZZZ

Don Alejandro immediately noticed how pale his son looked. "Diego, are you ill?"

Diego stopped in mid-pace and turned to look at him. "Ill?"

"You're so pale." Alejandro noticed that the hand Diego used to run through his hair was shaking.

"It's nothing."

He stepped into the library and placed a hand on the younger man's shoulder. "Diego, what is it?"

Diego's blue eyes starred into his for a moment. Then, he sighed. "I think the world is going insane. Or I am."

He nodded and motioned for Diego to sit. After carefully turning a chair to face his son's, he sank down into it. He studied the exhausted man in front of him and bled inside for him. In the last year, his son had aged years. "I know you and Victoria are having problems—"

Diego's shoulders tensed. "Father, this is not about—"

"Your marriage—"

Diego shot out of the chair and returned to his pacing. "Victoria has nothing to do with this."

Alejandro tried to find the words to explain that a man's wife had everything to do with every other part of his life. He knew in his own marriage, Elena touched every part of his life. If he was happy with her, he was happy with everything. Problems on the ranch were easier to solve when he could talk to her at night. When they fought, every burden in his life weighed heavier on his shoulders.

"Diego, I know—"

"Father, cows are dying."

He briefly considered trying to force the discussion, but he knew Diego's stubbornness was even more ingrained than his own. A fact he had somehow missed seeing for years. "We have been fortunate that none of ours have died. Our neighbors are worried."

"And scared. And I can do nothing to help."

Alejandro frowned. "I know you enjoy science, Diego, but I don't believe anyone expects you to be able to stop disease."

"But they expect me—" Diego stopped mid-sentence and shook his head. "I should be able to solve this problem. I just have to work harder on it."

"Son, you are seldom home now. You are needed here." His problems would not be solved by running away from them.

Diego stopped pacing, and Alejandro watched as his son's shoulders slumped. "No, I'm not needed here, Father. I have not been needed for some time."

"You have a child on the way, Diego."

Diego turned his back to his father and laid his hand on the piano. The keys clanged in protest. "You and Victoria both act as if I could forget."

"Diego—"

His son sat down and started to play a beautiful melody. "I know my responsibilities, Father. I have always been aware of my responsibilities. Even those you do not believe—"

Alejandro walked to his son and squeezed his shoulders. He took a deep breath, and struggled to say the words that should be so easy for him to say. "I know I have been hard on you, more often than not, too hard, too critical of you, but I do know you will be a great father."

The music stopped. Diego finally turned to look at him. "I have prayed that I will be at least half the father you have been to me."

Alejandro squeezed Diego's shoulder tighter and blinked back the tears. "You've been a wonderful father to Felipe, and I know you will be a wonderful father to the little one."

"I'm glad Felipe is not here to see this insanity."

Remembering the letters he had received from his grandson, Alejandro suspected the youngest de la Vega knew of the problems at home. Somehow the young man seemed to know that Diego and his bride were having troubles. Perhaps it was understandable. No one knew Diego as well as Felipe. The young man had asked some hard questions in his last letter, and Alejandro was still debating about how to answer.

But Diego had said earlier he was talking about dead cows and not his marriage. His son had been working hard to find a scientific answer for the problem. Water and soil samples had been taken. Plants had been carefully recorded. He'd even made notes of the bugs in the trees! He'd been just as diligent in doing everything he could to protect their herd. The dark circles under his eyes spoke of little sleep, and his clothes were beginning to hang some from his frame.

Alejandro rushed his grandson was here for Diego to lean against. "What insanity? The cows?"

"The fear," he answered, rubbing his forehead. "The subtle terror that is taking over our pueblo. Whispers of vampires. Of ghosts."

"Ghosts?" Alejandro shook his head. "I hadn't heard that theory."

Diego's chuckle was not from amusement. "That is my theory."

Alejandro struggled to understand. "You, my son, believe that ghosts are killing our cattle?"

"Not a real ghost. A man pretending to be a ghost." Diego sighed. "Mendoza has been seeing a ghost."

"A ghost?" Alejandro shook his head. "He has been 'haunted' before, Diego."

"Exactly! And Ramone would know—"

"Ramón? Victoria's brother?"

"No." Diego hesitated a moment before admitting, "Our former alcalde."

If it was anyone else besides his so serious son, Alejandro would've burst out laughing. "Diego, Ramone is dead."

"Apparently, Mendoza didn't find a body, Father. The good sergeant informed me tonight that—"

"I know," Alejandro admitted. "He told me when you were in France. But, Diego, he's gone. Zorro—"

"Could have been mistaken." Diego leaned forward, holding a hand out as if pleading. "What if he were wrong?"

"Ramone would've come back to Los Angeles before now."

"He would have been seriously injured—"

"Diego, even if it were possible for him to be here, there is no way he is the one killing the cows. You yourself have said no man—"

"Maybe I'm wrong there, too," he sighed. "Perhaps Zorro is not the only one who has made mistakes."

"Diego, I know you have had problems with our hero since—"

"His actions nearly killed my wife." Diego's jaw clenched. "It was acceptable to everyone but me."

Alejandro nodded, remembering the fury on his son's face when he returned home to find his wife injured and ill. He frowned as he realized that it was after that near catastrophe that the marriage began to show strain. Had they argued about Zorro? And his role in their life?

"Good afternoon," an unexpected voice said behind them. Alejandro was pleased by the smile on her face. Some of the tension had been easing from her face over the last week. She was still working too hard for a woman in her condition, but Diego had started making sure he was there to escort her home every night before closing. The extra sleep was apparently helping.

"Good afternoon," he replied. He smiled as his son offered his own greeting. "I am pleased to see you home so early."

She grinned and looked down at her feet. "I told Raul that I wanted to have dinner with my family."

"That sounds like a wonderful idea," he said, noting the smile on Diego's face.

"Indeed it does. We could—" Diego stopped talking and the smile left his face. "I told Doña Tasia that I would have dinner with her household tonight."

The chill in Victoria's eyes made Alejandro shiver. "You are having dinner with Doña Tasia."

Diego's face showed no expression as he explained, "I told her last night that I would. I'll send a message—"

"No," Victoria said, shaking her head. "You have made plans, and I would not dream of making you change them. Go and have your dinner with her; I'll keep your father company." Gathering up her skirt, Victoria turned and stalked from the room.

Diego watched her go without speaking a word. Then, he strolled out of the library and out of the hacienda.

Alejandro thought of the Doña Tacia, a beautiful viper who seemed to have his son entranced. Fury coursed through his veins. Fury that Diego would be so stupid as to accept a dinner invitation from her. And fear. Fear that he would not be able to resist her siren's call.

If he gave in to temptation, he would hate himself forever. Alejandro knew his son's sense of honor was even more ingrained than his stubbornness. Personally, Alejandro did not understand Diego's desire for the lady. She was beautiful on the outside, but she had none of the qualities he thought his son appreciated.

"Elena," he said, looking up to the heavens. "I wish you were here to help us."

Z Z Z

For the thousandth time, Diego asked himself why he was sitting at this table, eating dinner with this woman. He knew several men in the pueblo who would not understand the revulsion Tasia created in his soul. The alcalde, for example. That man was enamored by her beauty.

But even as he tried to deny that her physical beauty had also ensnared him, he found himself mesmerized as her dainty fingers slid around her glass of wine. She made another snide comment about a lady whom Diego admired. All night, while his mind provided verse after verse about her lips, he found himself cut by her savage wit. She never used it against him, only finding words of compliment for him. However, Diego loved his neighbors, loved many of them as if they were family, and hearing her belittle them had been painful.

And, yet, instead of telling her that she would never be half the woman Doña Rafeala was, he had only listened as she made fun of the dinner party the woman had held last week. When she had insulted one of his father's closest friends by saying the man was a savage who didn't deserve the land he had been given by the Crown, Diego had remained quiet, thinking only of her delicate facial features.

"Let's retire to the library, shall we?" she asked, standing. Diego wanted to make his excuses and leave, but his mouth remained closed as he followed her as if he were a puppet and she were his master.

"I expected to meet—" Diego cleared his throat. "-your husband tonight."

"Innocenzio is too ill to even have dinner at our table or to meet guests of any type, I'm afraid."

Diego struggled to find something to say to her. Something besides the poetry springing through his mind. "Have you allowed Dr. Hernandez to see him?"

She shook her head and tried to look sad. "No, I'm afraid Innocenzio has decided that he's suffered enough. No more treatments for him. He came to Los Angeles to die."

"It's a nicer pueblo to live in," Diego said, allowing his anger and disgust to escape. She was allowing her husband to die in agony without the benefit of medical aid.

"I agree. And I've told Innocenzio that I want him to live. However, my husband is even more stubborn than me," she said, and Diego found himself almost believing her. What was it about her that had him always assuming the worst about her? Was he someone trying to make her a villain in his own mind so he didn't feel guilty about lusting after her?

He nodded and finished the wine in his glass. "I have had a pleasant evening—"

She took a step closer, and the smell of her bath water swirled around him. "You are not leaving so early." It sounded like an order.

"I have a wife that needs me home."

"Really?" Another step closer. "Rumor has it that your bed is a cold one."

He clenched his teeth so tightly together that his jaw ached. "My marriage is none of your concern."

Her fingers played across his skin. "But it is. You and I both know it."

He shook his head and closed his eyes, but her smell still overwhelmed his senses. "I need to be home."

"But you want to be here," she whispered. Then, she drew his head down to hers.

Desire shot through his body, and he found his hands wrapped in her hair as he tried to inhale her. Her lips were as luscious as they promised. As he stood in her library with their bodies entwined, he could not remember why this was wrong.

Her tongue licked his jaw line. "You want me."

"Yes," he whispered in spite of himself.

"Then stop fighting," she whispered into his ear before starting to nibble her way down to the side of his throat.

Fighting? He wasn't fighting. Why would he fight? Just as soon as his mind asked the question, it supplied the answer. Victoria. He could see her standing in the library, the afternoon sun highlighting the smile on her face, a smile he had not seen in so long.

He pushed Tasia away. Her face was twisted in fury as she stumbled. "I'm married."

"You don't love her."

Diego stared at the woman in front of him, a woman he hated. Not only for being able to offer him a temptation, but for being a cruel person. For the smile on her lips as she cut into him with her words. "Yes, I do. I've loved her since I was a small boy."

Tasia laughed. "She's a bar maid. Doña Abegail—"

"She is a brave woman whose compassion is unmatched anywhere in the territories," Diego said, unwilling to hear even one word said against his wife. "There is no woman in the entire territory her equal."

Tasia's smile highlighted the swelling of her lips, swelling caused by their violent kisses. "None?"

"None," Diego answered. He turned and walked out of her home. He wouldn't admit to even himself that he was fighting the urge to run.

ZZZ

"You were going to have sex with him in our home," Innocenzio snarled.

She looked at her lover and smiled. "Yes, I was."

"He's my enemy."

"Diego de la Vega? He wasn't even at the Fortress. Everyone says—"

Innocenzio chuckled. "You've never listened to what everyone else says."

"True."

"He's dangerous."

She grinned and touched her lips. "I've sensed an amazing power in him ever since I met him."

"He's Zorro."

Her blood sang. "He's Zorro?"

Innocenzio nodded. "I remembered tonight when I saw him arrive."

Zorro. She had paid little attention to the outlaw. He could not stop her plans, and he had done little to ease the tensions running wild in the pueblo. Could it be? All the power. Could he be-"The Dark One?"

Innocenzio frowned at her words, unaware of a prophecy most vampires heard about in the first few months of death. "He's dangerous to your plans whatever they are."

She shook her head. "No, he's just might be what I need Innocenzio. Why I came to Los Angeles."

The blond man looked as if she had hit him. "You need him?"

"Yes."

Innocenzio took a step forward. Fury mixing with curiosity on his face. "For what?"

"To help me conquer the world."

ZZZ

He slipped into the cave and immediately headed towards the mirror. Fortunately, none of the vaqueros had been around when he returned home, and the servants were in bed. He had ridden from Tasia's hacienda like the demons of hell were following him. He had spent hours on his horse, thinking, struggling to understand the unforgivable.

The image looking back from the looking glass was that of a wild man. He could not remember a time when he appeared so disheveled. His hair was flowing in several different directions. Tasia's lipstick was smeared from his lips to his ears.

"I heard your horse," Victoria said.

He spun and found his wife standing at the archway leading into the cave. Her fingers were curled into tight fists, and her shoulders appeared to be trembling. The dullness in her eyes was gone, but Diego could not celebrate its loss. The pain there ripped him into pieces. He had caused her pain, something he had sworn never to do.

It didn't matter that he wasn't guilty of the crime. All that mattered to him was that he came far too close to committing it. "Victoria—"

"I prepared a bath for you. You will wash her from you before you come to our bed."

Diego wanted to explain but she was gone before he could open his mouth. He raced into the hacienda and ran into their room, but she wasn't there. Diego considered trying to find her, but knew it would be useless. Besides his flesh was crawling with the desire to be clean. He stripped out of his clothes and tossed them into the fireplace before sitting down into the cold water.

He sat there for over an hour, shivering. When he finally stumbled into bed, the door opened. Victoria shuffled quietly into the room and joined him. His earlier desire to explain had disappeared. What could he say? That he desired another woman, that he had almost fallen into that woman's bed? Nothing he could say would ease the pain he caused her, and he had no right to ask for her forgiveness. So he stayed on his side of the bed and pretended to be asleep while she cried.

ZZZ

Esperanza sighed as she strolled into the tavern. The Dark One was proving difficult to locate. And if she couldn't find him, she couldn't kill him. Unfortunately, the person who knew him best didn't trust her. She already suspected Esperanza had plans for Zorro.

The lady's hair was down instead of up in the proper bun it had been in before. Her clothes weren't as elegant, more appropriate for her environment. And she was as pale as any vampire Esperanza had met.

Terror replaced the sadness in her eyes when she noticed Esperanza. "What are you doing here?" Victoria demanded.

"I've come to talk to you."

Victoria held the dishes she was carrying closer to her body. "I want you to leave. The tavern is closed."

"Don't you want to convince me that Zorro is a good man?"

"Do you need some help, Doña Victoria?" the soft baritone of a man said behind Esperanza.

Victoria studied Esperanza before shaking her head. "Please take these dishes to Teresa to wash. I need to speak to this woman alone for a few minutes."

The man didn't appear to like it, but he left them. Esperanza followed her to a table next to the staircase and sat down with an attitude that she knew was rattling the other woman. Zorro's woman. She liked her; it was a shame she had to cause her pain to save the world.

"Zorro has saved so many people."

Esperanza leaned forward on her elbows and rested her chin in her hands. "I know."

"Why do you think—"

"I know," she said with a sad smile. "I don't particularly want to kill him, but it's necessary."

"Necessary?"

"Yes," she said. It wasn't what she was planning on saying. All day, lying in her cave, waiting for the sun to set, she had planned this conversation. She would use her charm and her wit to get information from Victoria. However, she had forgotten that she respected this woman, and since she respected her, she wasn't going to play games with her.

"Why are you so sad?" she asked. "I thought you didn't even like him?"

A hardened jaw line was the only response to her question.

Laughing, she leaned back against the wall. "I have heard that your marriage was a happy one. Briefly. Did Zorro destroy it? Did knowing you would die for the masked man drive Diego away from you? If you had allowed him to die that day, your marriage might still have been a happy one. And you and I would not be having this conversation."

Victoria's eyes were now looking at the table. "My marriage is still a happy one."

Esperanza leaned forward and clasped her hands, setting them carefully down on the table. Her words were going to hurt, but Victoria needed to face reality. "Every voice in this pueblo has whispered about you two. You are the favorite subject of conversation, I'm afraid."

The eyes were now looking up and full of fury. "People should mind their own business."

"I'll let you in on a secret. People never mind their own business. They haven't for centuries."

Victoria's eyebrow lifted. "You speak as if you know that for a fact."

Esperanza again refused to lie to her, but she knew she couldn't trust this woman with the complete truth. Or rather, she was choosing not to burden this woman with the truth. "I do know it," was all she said.

"Why did you come here tonight?"

"To get information about Zorro. He's elusive. Far more elusive than I believed possible." For a human.

"I won't give it to you."

Esperanza nodded. "I know. I planned on charming it from you, but I like you too much to use you in such a way."

"He's a good man."

"He's such a good man that he led you on a merry chase for 10 years and then didn't marry you." An emotion that Esperanza could not described fluttered across Victoria's face, and she could taste an old anger on her tongue. "You are so like my mother."

Victoria's eyes widened at the charge. "Your mother?"

"You let the men in your life use you."

"I do not let the men in my life use me!" Victoria's hands were now tight little fists pressed to the surface of the table as she leaned forward. She kept her voice quiet but she spoke with firm conviction.

Exactly like her mother! Victoria was a good but stupid woman who was willing to turn a blind eye to the failings of the men in her life. Esperanza leaned forward and taunted, "First there was Zorro who claimed to love you, but then he was never willing to marry you. He would kiss your hand while he used your kitchen to escape, and you thought he was the hero you had been waiting for. Then, there was Diego, who married you for reasons no one quiet understands, but now he's in another woman's bed."

Victoria's whole body was shaking and she was blinking back tears. "Diego's an incredible man."

"Who prefers another to you! What happened, Victoria? Did he marry beneath him and then found you lacking?"

The fury that crossed Victoria's face let Esperanza know that she had guessed the truth of the marriage. She knew little about the affair, only that de la Vega was sleeping with a married woman, the same married woman the alcalde had expressed interest in the night she arrived. But caballeros didn't marry inn keepers. A quickly regretted impulse of passion perhaps?

"Diego is a great man," Victoria said again through clenched teeth.

Esperanza shook her head and closed her eyes. She could remember her mother expressing similar sentiments after one of the men in her life mistreated her. Somehow, in her mother's definition, a great man was allowed to beat a helpless woman. And in Victoria's, a great man was allowed to cheat on the wife who loved him.

She opened her eyes. "You love him? The weak, helpless scholar, so unlike your hero? How can you love them both?"

"You know nothing about Diego."

"I know he's—" Esperanza drew herself up straight. Of course. Victoria was too pure of heart, too focused. She didn't love two men. She heart belonged only to one. "I know he's Zorro."

The terror in Victoria's eyes confirmed the sudden suspicion. "You love him because he's Zorro. He's your hero. He did actually marry you."

Victoria's issued a weak smile. "Diego? Zorro? Impossible. Ask anyone in the pueblo."

Esperanza looked at the woman and felt pity. "I'm sorry," she said, standing.

"Sorry?" she whispered.

"For making you a widow," she explained before walking away to complete her task.

Z Z Z