A/N: I don't own the rights to any of the Percy Jackson series or it's characters. That right gaoes to Rick Riordan. I also don't own the rights to Animorph including it's title.

I am, however, the person who posted 'The Tales of...' series.

This is not a crossover of the Percy Jackson series with the book/tv series Animorph, despite what you might think from the title. I just thought it be a proper name for the ability to turn into animals since that's why the tv/book series 'Animorph' was called that in the first place.

Also, ever since I got my latest Laptop I been stuck using Google Docs and Copy and paste my chapters and for some reason when I save what I paste any formats I made is turn to normal format. I even have to bold the chapter titles, but as I'm sure you noticed sometimes I forget to do that. So anything I normally itallilize like thoughts come out normal text. A/N at the beginning and end of each keep the format changes because I add them without copying and pasting from google doc.

If you haven't read this yet, read:

Animorph Percy Jackson and the Olympians: The Lightning Thief
Animorph Percy Jackson and the Olympians: The Sea of Monsters
Animorph Percy Jackson and the Olympians: The Titan's Curse
Animorph Percy Jackson and the Olympians: The Battle of the Labyrinth
Animorph Percy Jackson and the Olympians: The Stolen Chariot
Animorph Percy Jackson and the Olympians: The Sword of Hades
Animorph Percy Jackson and the Olympians: The Bronze Dragon
Animorph Percy Jackson and the Olympians: The Last Olympian
Animorph Percy Jackson and the Olympians: The Staff of Hermes
Animorph Percy Jackson and the Olympians: The Singer of Apollo

Jason: I Learn I Have a Sister I Might Know

I woke to the sound of thunder. Then I remembered where I was. It was always thundering in Cabin One.

Above my cot, the domed ceiling was decorated with a blue and white mosaic like a cloudy sky. The cloud tiles shifted across the ceiling, changing from white to black. Thunder rumbled through the room, and gold tiles flashed like veins of lightning.

Except for the cot that the other campers had brought me, the cabin had no regular furniture-no chairs, tables, or dressers. As far as I could tell, it didn't even have a bathroom. The walls were carved with alcoves, each holding a bronze brazier or a golden eagle statue on a marble pedestal. In the center of the room, a twenty-foot-tall, full-color statue of Zeus in classic Greek robes stood with a shield at his side and a lightning bolt raised, ready to smite somebody.

I studied the statue, looking for anything I had in common with the Lord of the Sky. Black hair? None. Grumbly expression? Well, maybe? Beard? NO thanks. In his robes and sandals, Zeus looked like a really buff, really angry hippie.

Yeah, Cabin One. A big honor, the other campers had told me. Sure, if you liked sleeping in a cold temple by yourself with Hippie Zeus frowning down at you all night.

I got up and rubbed my neck. My whole body was stiff from bad sleep and summoning lightning. That little trick last night hadn't been as easy as I had let on. It had almost made me pass out. It probably just be easier to pick something heavy up, but it wouldn't confirm who my dad was. Especially since Hera told me herself she blessed me with the strength of Heracles.

Next to the cot, new clothes were laid out for me. Jeans, sneakers, and an orange Camp Half-Blood shirt. I definitely needed a change of clothes, but looking down at my tattered purple shirt, I was reluctant to change. It felt wrong somehow, putting on the camp shirt. I still couldn't believe I belonged here, despite everything they told me.

I thought about my dream, hoping more memories would come back to me about Lupa, or that ruined house in the redwoods. I knew I'd been there before. The wolf was real. But my head ached when I tried to remember. The marks on my forearm to burn.

If I could find those ruins, I could find my past. Whatever was growing inside that rock spire, I had to stop it.

I looked at Hippie Zeus. "You're welcome to help."

The statue said nothing.

"Thanks, Pops," I muttered.

I changed clothes and checked my reflection in Zeus' shield. My face looked watery and strange in the metal, like I was dissolving in a pool of gold. I definitely didn't look as good as Piper had last night after she'd suddenly been transformed.

I still wasn't sure how I felt about that. I'd acted like an idiot, announcing in front of everyone that she was a knockout. Not like there'd been anything wrong with her before. Sure, she looked great after Aphrodite zapped her, but she also didn't look like herself, not comfortable with the attention.

I had felt bad for her. Maybe that was crazy, considering she'd just been claimed by a goddess and turned into the most gorgeous girl at camp. Everybody had started fawning over her, telling her how amazing she was and how obviously she should be the one who went on the quest-but that attention had nothing to do with who she is. New dress, new makeup, glowing pink aura, and boom, suddenly people liked her. I felt like I understood that.

Last night when I'd called down lightning, the other campers reactions had seemed familiar to me. I was pretty sure I'd been dealing with that for a long time-people looking at me in awe just because I was the son of Zeus, treating me special, but it didn't have to do with me. Nobody cared about me, just my big scary daddy standing behind me with the doomsday bolt, as if to say, Respect this kid or eat voltage? I got the feeling having Heracles strength doesn't help me in the matter either.

After the campfire, when people started heading back to their cabins, I had gone up to Piper and formally asked her to come with me on the quest. Even if Hera didn't appear to her in a vision or Aphrodite claimed her confirming her place in the prophecy, for some reason, it felt only right to ask her just as it was to agree to let Leo come if he can get us a ride. Like this quest was the reason I woke up on the same bus as them.

She'd still been in a state of shock, but she nodded, rubbing her arms, which must've been cold in that sleeveless dress.

"Aphrodite took my snowboarding jacket," she muttered. "Mugged by my own mom."

In the first row of the amphitheater, I found a blanket and wrapped it around her shoulders. "We'll get you a new jacket," I promised.

She managed a smile. I wanted to wrap my arms around her, but I restrained myself. I didn't want her to think I was as shallow as everyone else-trying to make a move on her because she turned all beautiful.

I was glad Piper was going with him on the quest. I had tried to act brave at the campfire, but it was just that==an act. The idea of going up against an evil force powerful enough to kidnap Hera scared me witless, especially since I didn't even know my past. I'd need help. But things were already complicated without figuring out how much I liked her, and why. I'd already messed with her head.

I slipped on my new shoes, ready to get out of that cold empty cabin. Then I spotted something I hadn't noticed the night before. A brazier had been moved out of one of the cloves to creat a sleeping niche, with a bedroll, a backpack, even some pictures taped to the wall.

I walked over. Whoever slept over there, it been a long time ago. The bedroll smelled musty. The backpack was covered with a thin film of dust. Some of the photos once taped to the wall had lost their sickness and fallen to the floor.

One picture showed Annabeth-much younger, maybe eight, but Jason could tell it was she: same blond hair and gray eyes, same distracted look like she was thinking a million things at once. SHe stood next to a sandy-haired guy about fourteen or fifteen, with a mischievous smile and ragged leather armor over a T-shirt. He was pointing to an alley behind them, like he was telling the photographer, Let's go meet things in a dark alley and kill them! A second photo showed Annabeth and the same guy sitting at a campfire, laughing hysterically.

Finally I picked up one of the photos that had fallen. It was a strip of pictures like you'd take in a do-it-yourself photo booth: Annabeth and the sandy haired guy, but with another girl between them. She was maybe twelve, with black hair-choppy like Piper's==a black leather jacket, and silver jewelry, so she looked kind of goth; but she was caught mid=laugh, and it was clear she was with her two best friends.

Something about her is familiar. Like I knew her from somewhere...

"That's Thalia," someone said.

I turned.

Annabeth was peering over my shoulder. Her expression was sad, like the picture brought back hard memories. "She's the other child of Zeus who lived here-but not for long. Sorry, I should've knocked."

"It's fine," I said. "Not like I think of this place as home."

Annabeth was dressed for travel, with a winter coat over her camp clothes, her knife at her belt, and a backpack across her her shoulder.

I said, "Don't suppose you've changed your mind about coming with us?"

She shook her head. "You got a good team already. I'm off to look for Percy."

I was a little disappointed. I would've appreciated having somebody on the trip who knew what they were doing, so I wouldn't feel like I was leading Piper and Leo off a cliff."

"Hey, you'll do fine," Annabeth promised. "Something tells me this isn't your first quest."

I had a vague suspicion she was right, but that didn't make me feel any better. Everyone seemed to think I was so brave and confident, but they didn't see how lost I really felt. How could they trust me when I didn't even know who I was?

I looked at the pictures of Annabeth smiling. I wondered how long it had been since she'd smiled. She must really like this Percy guy to search for him so hard, and that made me a little envious. Was anyone searching for me right now? What if somebody cared about me that much and was going out of her mind with worry, and I couldn't even remember my old life?

"You know who I am," I guessed. "Don't you?"

Annabeth gripped the hilt of her dagger. She looked for a chair to sit on, but of course there weren't any. "Honestly, Jason... I'm not sure. My best guess, you're a loner. It happens sometimes. For one reason or another, the camp never found you, but you survived anyway by constantly moving around. Trained yourself to fight. Handled the monsters on your own. No doubt having the strength of Heracles helped, but still, in the end you beat te odds."

'The first thing Chiron said to me," I remembered, "was you should be dead."

"That could be why," Annabeth said. "Most demigods would never make it on their own. And a child of Zeus-I mean, it doesn't get any more dangerous than that. The idea of most children of Zeus reaching fifteen without finding Camp Half-Blood or dying is microscopic. But most aren't blessed with super strength either. Thalia wasn't, but she manage to survive on her own for years after running away when she was young. SHe even took care of me for a while."

I held out my arm. "What do you think these marks mean then?"

Annabeth glanced at the tattoos. Clearly, they bothered her. "Well, the eagle is the symbol of Zeus, so that makes sense. The twelve lines-maybe they stand for years, if you;d been making them since you were three years old. SPQR-that's the motto of the old Roman Empire: Senatus Populusque Romanus, the Senate and the People of Rome. Though why you would burn that on your own arm, I don't know. Unless you had a really harsh Latín Teacher..."

I was pretty sure that wasn't the reason. It also didn't seem possible I'd been on my own my whole life. But what else made sense? Annabeth had been pretty clear-Camp Half-Blood was the only safe place in the world for demigods.

"I, um... had a weird dream last night." I said. It seemed like a stupid thing to confide, but Annabeth didn't look surprised.

"Happens all the time to demigods," she said. "What did you see?"

I told her about the wolves and the ruined house and the two rock spires. As I talked, Annabeth started pacing, looking more and more agitated.

"You don't remember where this house is?" she asked.

I shook my head. "But I'm sure I've been there before."

"Redwoods," she mused. "Could be northern California. And the she-wolf Lupa... it could bethe same she-wolf that raised Romulus and Remus before the founding of Rome," Annabeth said. "But I didn't know she is still around, much less immortal."

"Why wouldn't she still be around if she's immortal?" I asked.

"Sometimes a god fades over time if they feel forgotten or their domain been diminished," Annabeth said. "I seen it happen once and nelieve me, once you seen a god faded you never forget it."

I got the feeling she wasn't joking.

"Lupa said the enemy was a 'her'. I thought it maybe it was Hera, but-"

"I wouldn't trust Hera, but I don't think she's the enemy. And that thing rising out of the earth-" Annabeth's expression darkened. 'You've got to stop it."

"You know what it is, don't you?" I asked. "Or at least, you've got a guess. I saw your face last night at the campfire. You looked at Chiron like it was suddenly dawning on you, but you didn't want to scare us."

Annabeth hesitated. "Jason, the thing about prophecies... the more you know, the more you try to change them, and that can be disastrous. Chiron believes it's better that you find your own path, find out things in your own time. If he'd told me everything he knew before my first quest with Percy... I've got to admit, I'm not sure I would've been able to go through with it. For your quest, it's even more important."

"That bad, huh?"

"Not if you succeed. At least... I hope not."

"But I don't know where to start. Where am I supposed to go?"

"Follow the monsters," Annabeth suggested.

I thought about that. The storm spirit who'd attacked me at the Grand Canyon had said he was being recalled to his boss. If I could track the storm spirits, I might be able to find the person controlling them. And maybe that would lead me to Hera's prison.

"Okay," I said. "How do I find storm winds?"

"Personally, I'd asked a wind god," Annabeth said. "Aeolus is the master of winds, but he's a little... unpredictable. No one finds him unless he wants to be found. I'd try one of the three seasonal wind gods that work for Aeolus."

"Don't you mean four?" I asked.

"Not really. Although Zephyrus answers to Aeolus and the Olympians at times, he actually works for Eros-Minor god of love," Annabeth said. "Long story involving Apollo and a shared love interest."

"Great..." I said, "So which wind god do you recommend?"

"The nearest one, the one who has the most dealings with heroes, is Boreas, the North Wind."

"So if I looked him up on Google maps-"

"Oh, he's not hard to find," Annabeth promised. "He settled in North America like all the other gods. So of course he picked the oldest northern settlement, about as far north as you can go."

"Maine?" I guessed.

"Farther."

I tried to envision a map. WHat was farther north than Maine? The oldest northern settlement...

"Canada," I decided. "Quebec."

Annabeth smiled. "I hope you speak French."

I actually felt a spark of excitement. Quebec-at least now I had a goal now. Find the North Wind, track down the storm spirits, find out who they worked for and where that ruined house was. Free Hera. All in four days. Cake.

"Thanks, Annabeth." I looked at the photo booth pictures still in my hand. "So, um, you said it was dangerous being a child of Zeus. What happened to Thalia?"

"Oh, she's fine," Annabeth said. "She became a Hunter of Artemis-one of the handmaidens of the goddess. They roam around the country killing monster. We don't see them at camp very often, but if we do we normally have a game of capture the flag against them."

I glanced over at the huge statue of Zeus. I understand why Thalia had slept in this alcove. It was the only place in the cabin not in Hippie Zeus' line of sight. And even that hadn't been enough. She'd chosen to follow Artemis and be part of a group rather than stay in this cold drafty temple alone with her twenty-foot-tall dad-my dad-glowering down at her. Eat voltage! I didn't have any trouble understanding Thalia's feelings. I wondered if there was a Hunters group for guys.

"Who's the other kid in the photo?" I asked. "The sandy haired guy."

Annabeth's expression tightened. Touchy subject.

"That's Luke," she said. "He's dead now."

I decided it was best not to ask more, but the way Annabeth said Luke's name, I wondered if maybe Percy Jackson wasn't the only boy Annabeth had ever liked.

I focused on Thalia's face again. I kept thinking this photo of her was important. That I know her somehow. I was missing something. And yet a voice inside me was telling me: Dangerous, Stay away.

"How old is she now?" I asked.

"Hard to say. SHe was a tree for a while. That cut her aging by half. Now she's immortal."

"What?"

My expression must've been pretty good, because Annabeth laughed. "Don't worry. It's not something all children of Zeus go through. It's a long story, but... well, she was out of commission for a long time. If she aged regularly, she'd be in her twenties now, but she's about... well, about your age. Fifteen or sixteen."

Something Lupa told me in my dream nagged at me. I found myself asking. "What's her last name?"

Annabeth looked uneasy. "She didn't use a last name, really. If she had to, she'd use her mom's but they didn't get along. Thalia ran away when she was pretty young."

I waited.

"Grace," Annabeth said. "Thalia Grace."

My fingers went numb. The picture fluttered to the floor.

"You okay?" Annabeth asked.

It make sense now why Thalia looked so familiar.

You should be dead, Chiron had said. It wasn't a comment about me beating the odds as a loner, Chiron knew something-something about my family.

Hera must have left my memory of Thalia as a warning about my past.

The she-wolf's words in my dream finally made sense to me, her clever joke at my expense. I could imagine Lupa growling a wolfish laugh.

"What is it?" Annabeth pressed.

I couldn't keep this to myself. It would kill me, and I had to get Annabeth's help. IF she knew Thalia, maybe she could advise me.

"You have to swear not to tell anyone else," I said.

"Jason-"

"Swear it," I urged. "Until I figure out what is going on, what this all means-" I rubbed the burned tattoos on my forearm. "You have to keep a secret."

Annabeth hesitated, but her curiosity won out. "All right. Until you tell me it's okay, I won't share what you say with anyone else. I swear on the River Styx."

Thunder rumbled, even louder than usual for the cabin.

You are our saving Grace, the she-wolf had snarled.

I picked up the photo from the floor.

"I asked Lupa about my last name and she told me I was her saving grace. I think she meant my last name is Grace," I explained. "Which means, this is my sister-as in we have the same mother and father."

Annabeth turned pale. I could see her wrestling with dismay, disbelief, anger. She thought I was lying. My claim was impossible. And part of me felt the same way, but as soon as I spoke the words, I knew they were true.

Then the doors of the cabin burst open. Half a dozen campers spilled in, led by the cyclopes Jeffrey.

"The Dragon is back!" Jeffrey said.

A/N: Instead of having Annabeth not recognize Lupa's name I had it where she didn't know Lupa was immortal or haven't faded like Pan. Reason is I find it odd with all the reading and studying Annabeth does, she never heard of Lupa. I would think she would of heard of Lupa from the stories on Romulus and Remus since both were demigods. And of course since the Gods kept the Greeks and Romans separated and Lupa trains and associated with Roman Demigods no Greek demigod would be aware of her still being around anymore than the Romans (that aren't Lares that been around since the American Civil War at least) wouldn't be aware of Chiron still being around.

Same reason I had her brought up Zephyrus working for Eros. No way Annabeth wouldn't know he is working for the Minor love god in return of Eros' protection. Of course that doesn't mean Zephrus doesn't recieve orders from Aeolus once in a while just as he does with the Olympians (after all, he delivered Annabeth to her dad as a baby for Athena).

Also a reminder Thalia never told Percy of Jason in Animorph Percy Jackson like I had her do in The Tales of series. So of course that means Annabeth didin't know about Jason either.