Disclaimer: I do not own Arrow, it is owned by the CW, I am merely playing around with the universe they have created. But, I do own the plot and any OCs I throw in.

Previously…

"Calla?"

"Bring it on, Oliver," Calla smirked.

Oliver nodded and grabbed his quiver and bow, shooting five arrows simultaneously at her while she extended her palm out, closed her fingers and made a fist. The five arrows froze midway and shattered into a thousand pieces.

Everyone's eyes were wide and she said, "My apologies, Oliver. The arrows were finely made."

Oliver shrugged and answered, "Does it seem like I believe you can shatter arrows but can't mend them back?"

At this, Calla cocked an eyebrow and said, "Very well, you are not one easy to fool." She made a circular motion with her palm faced down and the shattered pieces mended back together. With the turning of her palm to face the ceiling, the arrows rose and landed on her palm, brand new and as sharp as before.

Thea could not contain herself and burst out what everyone was thinking.

"What the hell?"

Chapter 2: Bloodlust

"Think it over, Oliver. I'll return tomorrow," Calla said, picking up her armor and weapons. She walked over and into the lift; just when the doors were almost closed, she called back, "Oh, and I'll have the clothes washed and dried in a couple of days, Felicity."

With a solid shut, the lift doors closed and Calla was out of the lair.

After five seconds or silence, everyone talked at the same time.

"How many mystical people do you know, Oliver?"

"Another League assassin?"

"Whoa. Those powers were freaky. Though John's were just as great."

"I do not know her, Laurel. She just appeared out of nowhere. I'm pretty sure we will still have our share of the League, Malcolm would not just sit there in Nanda Parbat." Oliver answered.

"Calla was the only one I was friends with in the League. Rumors and whispers said that Ra's was preparing for another attack against Darhk with a special assassin he trained himself. Then, I didn't know that Calla was that special one; we thought that she was just an ordinary assassin. I'm not sure whether Nyssa knew," Sara spoke up.

"Her skills in combat and with the bow are one of the top in the League, and just right before I was about to leave and check on Laurel and Dad, Calla disappeared and even Nyssa did not know where she went, I thought she was killed in one of her missions."

Calla flagged down a cab and gave the driver her apartment address. She moved her palm over her armour and weapons, and they disappeared from the cabbie's eyes. He rubbed his eyes with his spare hand, and thought that it was just fatigue that caused him to see things.

Reaching her apartment block, she paid the cabbie and went up into her rented flat. Placing her invisible armour and weapons on the couch, she took out her phone and sent a message.

Nyssa,

Sara is back.

Calla.

"Congratulations! You have two cute little girls!" the doctor exclaimed, when two babies were delivered out.

"Our two little bundles of happiness, love," the tired but happy woman carried one of the twins with motherly love while the father carried the other.

The first was crying really loudly, and the mother tried to coo and calm her down but to no avail. The latter was strangely quiet, and sensing the unnatural behaviour, the father quickly asked the doctor, "Dr. Davis, why isn't she crying?"

Hearing this, the doctor quickly checked the baby's vitals and shouted, "Nurse! Check if the vitals are correct!"

The nurse did so and replied swiftly with an apprehensive tone, "Wires and machine working, doctor. Is she...?"

"I'm sorry, I'm truly sorry," Dr. Davis softly apologized to the father.

Immediately, both the parents froze, and the other twin's cries went softer, like she could sense the coming horrible truth.

"No, no, doctor. Please, NO!" the father shouted with anguish, unable to accept it.

"I'm really sorry, but she was born with normal and healthy vitals, but they suddenly plummeted down when she could not breathe or cry out loud. Her lungs and heart failed her, I'm sorry."

The mother gasped and sobbed out, tears cascading down her formerly rosy and happy cheeks. Her blonde hair was soaked with the salty liquid after not long, and the father slid down the wall, silent but wrecked. The other surviving baby let out a full-fledged cry, like she could sense the sorrow and the anguish of her sister's passing that replaced the joy and laughter just minutes ago.

Down in the lair, the team was still discussing whether to accept Calla's offer, when one of the computers beeped.

Felicity quickly walked over and with a click of the keyboard, she reported out loud, "Starling City National Bank, safe of 100 million US dollars stolen, only detected after the robbers escaped. Guards at the entrances of the safes all killed. Zooming in…bank security camera shows the plate numbers LHM-6483 and JRF-5267…both trucks grey. Scanning the SCPD's traffic cameras. One heading towards Magnusan Plaza, the other Winnick Building. This is most definitely the job of the ghosts."

"We'll discuss this later," Oliver said. "Suit up."

Laurel, Sara, Diggle, Thea and Oliver grabbed their weapons and changed into their suit, ready to go and Diggle said, "Laurel, Thea and I will take the truck heading towards Magnusan Plaza. Oliver and Sara, the one heading towards Winnick Building."

Everyone nodded and proceeded out of the lair, with Oliver and Sara sharing a bike, Laurel on hers and Thea with Diggle on the minivan.

Felicity's voice could be heard on all the comms and she said, "Be careful."

Even though all of them knew Felicity could not see their actions, they all nodded and turned their focus on the hunt.

...

Coming out of the shower, Calla's phone beeped and she walked over, checking it.

Looking at her GPS, the dot was moving at top speed out of the Mayor's office, most likely chasing some criminals. Calla smiled, and grabbed her armor and weapons, exiting her apartment. All thanks to my tracker on Sara.

Chasing up to the truck heading towards Winnick Building, Oliver steadied his bike and shot an arrow at the truck and swung onto the roof, opening the truck's back doors.

Ghosts dressed with their usual clothing all aimed their guns at Sara on the bike, little did they know Oliver was right above them. He swung down, kicking four of the ghosts out of the truck and lodging an arrow into the shoulder of one who was getting too close. Oliver switched to hand to hand combat, engaging into a fight with more than five of the ghosts.

Sara accelerated the bike and when she was beside the truck, she let an arrow fly and break the side glass window. She jumped onto the roof of the front of the truck, swinging down to kick the driver in the face. Taking out both ghosts with a chokehold and snapping his neck and choking till the other went slack, she threw them out onto the road and quickly pulled the brake of the truck. Sitting on the seat of the truck, Sara folded her knees up and trembled with fear. I couldn't control the bloodlust.

At the back, Oliver was still engaged with three of the ghosts when he carelessly took a hit to the ribs. He swore in Russian and attacked back, hitting one on the head and ducking down to avoid a punch in the face.

Distracted with taking the remaining two out, he did not notice another one getting back on his feet, gun in his hand and aiming for the Green Arrow. Just when pulled the trigger, a figure swung down and pushed him aside, letting the bullet ricochet sideways, only grazing Oliver's arm. Taking out the remaining two ghosts, Oliver glanced up to see the same arrogant smile and League armor.

"Joining in the fun, Green Arrow," Calla smirked. Just finishing her sentence, Oliver turned around in just a second and swung his bow to attack the ghost sneaking up to him, only to see an arrow lodged firmly into the throat of the ghost, his eyes wide with shock. Oliver turned around and Calla lowered her bow.

"We. Do. Not. Kill. Here," Oliver growled out and his eyes turned to steel.

While on the other road, Laurel sped her bike up and Thea kicked open the truck doors, while the Ghosts aimed their guns at both of the vigilantes. Laurel opened her mouth and the trademark ear-piercing scream tore the eardrums of the ghosts. Thea, with ear plugs in her ears, attacked the ghosts and one by one, they went down. Laurel jumped in and engaged the fight with three of the ghosts, successfully knocking them out.

Diggle opened the side door of the minivan and shot five bullets into the tire and the truck started to skid around. The passenger ghost crashed through the window and was knocked out, while the driver struggled for control, trying to hit the minivan. Instead, Diggle slammed the vehicle into the truck, causing the driver to hit his head against the window and suffered a serious side whiplash and fell unconscious. Then, with the gun aimed at the brakes of the truck, Diggle fired a bullet and the truck came to an instant stop.

At the back of the truck, the sudden stop caused the ghost to get a free hit on Thea, and she slammed into the side of the truck. Burning with fury, she got back up and retaliated viciously, hitting the ghost again and again, even after he was out cold. Laurel, done with her ghosts, turned to see Thea beating the world out of one and she quickly restrained Thea, shouting, "Thea! Thea! He's already out cold! Stop attacking, Thea!"

Hearing the protests of Laurel, Thea battled with her inner bloodlust and she finally got better of it, stopping herself at another punch. "Laurel?" Thea whispered, scared. "It's okay, Thea, it's okay. You stopped," Laurel comforted her and slowly pushed her arm down to her side.

"What I do is no control of yours, Oliver. You should be glad you are still alive," Calla hissed back. When Oliver was about to growl back, Calla noticed that the front of the truck was silent, and she quickly ran to the front.

"Sara? Sara!" Calla called out and seeing Sara huddled on the seat of the driver, the bodies on the ground, she guessed what happened and hugged Sara. "It's okay, it's okay, Ta-er Al-Sahfer. It's okay."

Oliver stood on the road and his previous anger receded away. Sara was more important.

The lift doors of the lair opened, and the team filtered in.

Felicity was there with the First Aid bag, ready and waiting. Both Sara and Thea wore identical expressions; Laurel holding Thea up and Calla supporting Sara.

"I couldn't control the bloodlust, Ollie. I couldn't. It's coming back, it's coming back." Thea whispered, and Sara closed her eyes.

Guiding Sara to a chair, Calla spoke up.

"Thea, I'm sure your bloodlust was held in after killing multiple people sent by Ra's?"

"Something along the lines of that, yes."

"There is no known way of stopping the bloodlust, only keeping it under reins for a limited time, one way is to let it take over and kill, the other is with a very intricate spell that would need two casters," Calla said, and she glanced at Oliver. "Would it be too much of a trouble to call John Constantine over?"

Oliver stared at her for a second, surprised (but not really) that she knew about John. He took out his phone and dialed John's number, and after two rings, the receiver answered.

"John? You need to come over."

"Again, Oliver? Another restoration of the soul of the pretty girl?"

"Nope. But close."

John hanged up and Oliver switched off his phone, assuming that he was on his way.

"Felicity, bullet graze and ribs," Calla tipped her head towards Oliver. "Right," Felicity replied and walked over to Oliver with the First Aid box.

After the checking of everyone's injuries, Calla was heading towards the lift when Oliver came up behind her.

"Calla."

"Oliver, if this is about the ghost I've killed, save your breath. I know your team does not kill, but I am not in your team."

Oliver looked around at the others, and they all nodded their heads.

"You are, now." Oliver extended his hand out, and Calla smiled. "Took you long enough." She shook hands with Oliver, and stepped into the lift.

"I'll try not to kill, Oliver. After all, I am trained by the League of Assassins," Calla said.

A/N: Another chapter done. I've decided to include Constantine, but we'll have to see how it goes before I decide whether to keep him or not. By the request of two reviewers, I've included flashbacks and intend to continue for the chapters to come. This is the second chapter I've updated in three days, but do not expect such fast updates as it's the holidays right now, normally my updates aren't stable, they could be once a week, fortnightly, or even up to a couple of months. One more thing, I did not check the grammar and spelling of this chapter (much) so there's a very high chance the chapter's full of mistakes; please bear with them. Thank you for reading and remember to review! Reviews feed my muse. :)