alright ladies and gentlemen we are back on track who's ready for the next chapter? cause i know i am. I don't own the Ninja Turtles, or the other characters I only own Caitlin and AVP5 owns Chris. Enjoy! :)

Eight: Changes

Chris and Leo raced through the sewers as fast as they could. They had to get back to the lair because they weren't sure how much longer Caitlin would survive.

Since Chris was faster, Leo let him take her back. ''I'll be right behind you. Be careful with her.'' ''I will just call the others and let them know what's going on,'' Chris takes off as he heads towards the lair.''

Leo pulled out his t-phone and called Donnie, he picked up after a few seconds. ''Hey Leo what's up?'' ''Donnie get the first aid kit ready Chris is brining you a patient.''

''Why? what's the emergency?''

''No time just have everything ready.'' Donnie sighed but didn't argue. ''Alright Leo everything will be ready.''

''Good,'' Donnie turns around and sees Chris with Caitlin. ''Because I have your patient right here.''

*…*

Back at Shredder's lair, Karai was pacing in the throne room. While the doctor arrived to check Shredder's wounds, Karai continued pacing. It didn't make sense. She was hoping to surprise her sister when she came home early but she didn't expect everything to fall apart.

''Your'e sister has betrayed us.'' That's what Shredder had said. But she didn't want to believe it, Caitlin was her sister why would she do that?

The doctor came out of the room and approached her. He said that Shredder would make a full recovery but did sustain some injuries. She was glad to hear it and she asked him if he noticed Caitlin acting weird while she was gone.

He said that he didn't notice anything, except that she failed a mission a week ago and he punished her for it.

When Karai heard that she was so angry. But she tried not to show it. She thanked the doctor and then walked out the throne room to talk to Shredder.

She walked into Shredder's room. ''Shredder?'' Shredder grunted, ''What is it Karai?'' She grabbed a chair and sat down. ''Why did Caitlin attack you?'' ''I already told you that she betrayed us. She is working with the turtles now.''

''But why? why would she betray us?''

''I'm not sure why either.''

''One more thing, why did you punish Caitlin?''

''She failed a mission and needed to be punished.''

Karai was furious, but she kept her cool. ''Father, may I have permission to go look for Caitlin?''

''No. Do not make a move.'' ''But..'' ''I said no Karai!'' Karai sighed. ''Alright, I understand father.''

She bowed and left the room. '' Something still doesn't make sense. I have to find out what happened what Caitlin did and why she did it.''

*…*

Back at the lair, Chris watched as Donnie checked on Caitlin.

Leo arrived a few minutes later and Raph, Mikey, and Donnie had a few choice words for him. ''Leo what were you thinking?!'' Raph shouted, ''why did you bring her here?!'' ''Yeah dude, she's our enemy in case you forgot'' said Mikey. Donnie nodded. ''I don't even know why I'm helping her.'' Chris glared at him.

''Shut up! she's-'' ''what is going on in here?'' Splinter was trying to meditate in the dojo but when he heard his sons and their friend shouting, he knew something was up.

And he was right when he saw the girl known as Karai's sister laying on Donnie's cot in the lab. ''Leonardo?'' ''let me explain Sensei.'' ''She's not who we thought she was. She's Chris's sister.''

Everyone stared at Chris in shock. ''It's true, when she found out she betrayed Shredder and tried to fight against him, but he threw her through a window.'' Raph scoffed. ''Yeah right.''

''How did you know all that?'' ''because I had a vision or something, that showed me that she was in trouble.''

Splinter was shocked when he heard this but did not show it. ''Then we will keep her here for the time being. At least until she wakes up and can tell us in her own words what happened.''

''Mind if I stick around?'' Chris asked.

''That is fine Chris.''

Chris nodded but went to go get some things first while Raph and Mikey left the room. Donnie kept working as Leo walked over to Caitlin and knelt next to her. Splinter joined him. ''Leonardo? are you alright?'' ''I don't know Sensei.''

''I'm not even sure I did the right thing.'' ''Leonardo, you did what you thought was best and saved her. I'm sure she will be thankful if she really has turned against Shredder.''

Leo sighed. ''I hope so to.'' ''Well I've done all I can do.'' Donnie said as he finished stitching up Caitlin's wound from the knife. ''We should let her rest, it'll be a while before she wakes up.

''I'll stay here until she wakes up.'' Splinter nodded. Him and Donnie left and Leo grabbed a chair waiting and hoping Caitlin would wake up soon.

*...*

Caitlin groaned as she slowly woke up but her vision was blurry. It took her a few minutes to regain her senses, and that's when she saw where she was. ''Oh God…'' Caitlin had a bad feeling about this.

And wherever she was she could tell it wasn't friendly. She sat up. ''W-where am I?''

She tried moving out of bed, but she was a little weak to move. She growled on frustration and used a nearby table to help her up.

As she was getting up, she heard muddled noises but couldn't make out who they were. She decided to get a little closer and heard it was the turtles. ''Oh no…''

She walked up to the door so could hear them talk better. ''I'm telling you Leo I don't like the idea of having the foot clan in our lair.'' ''Your'e wrong Raph she's not part of the foot anymore.'' ''Well what if this all just some elaborate scheme?''

''It's not a trick Raph. Drop it.'' As she heard them start to fight, Caitlin decided this would be the best time to escape. Slowly and using her ninja skills, she crept out the door, and tried to sneak past them without them noticing.

She was almost at the exit when she bumped into Donnie. ''Hey, going somewhere?'' Caitlin eyes grew wide as she freaked out and tried to run.

''Whoa easy…'' but she didn't listen. She lifted up the table, knocked him out, and ran as fast as she could.

Just as Leo and Raph were about to go at it, they heard a noise that sounded like a grunt, and then someone running away. ''What was that?'' asked Raph. Leo's eyes grew wide. ''Caitlin.'' They ran into the other room and found Donnie on the floor.

''Donnie!'' Raph shook his shoulder, ''Donnie you ok?'' Donnie opened his eyes and let out a grunt. ''Yeah…yeah I'm okay.'' ''Donnie what happened?'' asked Leo, ''Caitlin, she woke up, she must have been afraid so she knocked me out and ran off.

''Oh boy.'' ''Come on!'' and Leo and Raph raced through the sewers to find Caitlin.

''Which way?'' Caitlin had been running through the sewers for a few minutes now, trying to find a way out. ''Why are there so many damn tunnels down here?!'' ''Caitlin!''

''Oh come on!'' Caitlin angrily whispered. She could hear their footsteps getting closer, and she started to panic until she ducked into a small sewer tunnel. She hid until she heard them past, and then ran the other way until…''hey there you are!'' ''oh crap…'' Mikey had seen his brothers run out and followed them. Caitlin gasped. ''Easy, easy just come with me and…'' before he said more, Caitlin knocked him out.

''Not cool…'' as soon as he was out cold, she took off again.

Few minutes later…

''Mikey!'' Leo and Raph up to Mikey who was laying on the ground unconscious. ''Is he okay?'' Mikey groaned. ''Dudes…Caitlin…she ran off…that way…'' Leo looked down the tunnel. ''Raph, take Mikey back to the lair, I'll go after Caitlin.''

Raph nodded, picked up Mikey, and took him back to the lair while Leo went to find Caitlin. ''Made it,'' after knocking out Mikey and wandering around for a few minutes, Caitlin finally found the way back to the surface.

She closed the manhole cover and started to walk out of the alley, until someone grabbed her from behind. ''Gotcha.'' Caitlin froze. It was Leo. He found her. ''Let me go!''

''Easy, easy…'' Caitlin growled and kicked him in the knee, and tried to run off but Leo caught her again tightening his arms around her. ''Easy…I'm not gonna hurt you'' he rubbed her arm, trying to get her to calm down but it was hard since she was struggling. ''Relax…it's okay.'' Caitlin finally calmed down and Leo let her go. ''Why did you kidnap me?'' Leo looked at her confused. ''We didn't kidnap you, don't you remember anything about what happened to you?'' Caitlin suddenly remembered confronting Shredder and their fight and then Karai attacking her, but the rest was all a blur.

''I saw you falling and I saved you. You pretty badly wounded so Chris brought you back to our lair so Donnie could take care of you.'' Caitlin was shocked. ''Why would you do that after all I've done to you and your family?''

''because…you didn't know the truth…that you were Chris's sister.'' She at him for a moment. ''I know.'' ''What how…'' ''I had Stockman run some tests.''

She told Leo everything, including when Chris told her when she was in her disguise and what Shredder had told her about her parents and how she had a brother who they thought was dead. ''And…that's what happened.''

''What did you do when you found out the truth?'' ''I fought Shredder, that's when Karai attacked me.'' Leo was surprised by all of this, but had another thing to worry about. ''We need to get you back to the lair.'' ''Leo..I can't.''

''Why not?'' ''because I don't belong there.'' ''But…'' ''Leo I was raised and trained by the man who killed my parents. I have to make him pay.'' Leo walked towards her and grabbed her by the shoulders. ''Caitlin, revenge is not a good thing. You could get killed!''

''I don't care this is my choice Leo and I'm not going to let him get away with it.'' ''Caitlin wait…'' She turned to walk away but Leo grabbed her hand.

She stared at him and felt her heart pounding and Leo felt the same way. He squeezed her hand. ''Please…I don't want you getting hurt again…don't do this.''

Caitlin stared at him, She couldn't help but wonder why he cared for her so much. But she sighed and gave in. ''Alright, I guess I could stay for a little while.''

Leo gave her a small smile. ''Come on let me help you.'' ''I don't need any…'' before Caitlin could finish, Leo picked her up bridal style and took her back to the lair. When they got there, Mikey and Donnie were sitting on the couch. Raph was not happy. ''What?! are you kidding me? why did you bring her back here?'' Leo set Caitlin on her feet.

''Back off Raph.'' ''Why are you still…'' ''Leonardo! Raphael enough!'' Just then, Master Splinter walked into the room. Caitlin was a little shocked, but he smiled at her. ''Welcome Caitlin.''

''Thank you. And…I'm sorry about knocking out two of your sons earlier.'' ''It's okay'' said Mikey, Donnie nodded. ''Yeah I understand why you were hostile. I mean, waking up in the sewer with four turtles you fought in past, would make anyone on edge.''

Caitlin gave him a small smile. ''Thanks…ouch!'' Leo grabbed Caitlin's hand. ''Caitlin! what's wrong?'' Donnie sighed. ''She must have popped her stitches here bring her to the lab I'll fix it up.'' ''Come on Caitlin.'' Leo picked her up again and walked into the lab with others behind them.

*…*

Meanwhile, at the park near sundown, Chris was with Casey and April. He was resting on the merry go round and telling them that his sister is Caitlin.

''Wow…'' April said shocked, ''and your not shocked by this how are you so calm?'' Casey put a hand on her shoulder, ''relax Red.'' ''I can't this is big news!'' ''I guess I'm not that surprised,'' said Chris as he gets off the ride.

''I mean, I guess I knew deep down she seemed familiar to me, but I couldn't put my finger on it. Now I know what it is and she is my sister.'' Casey nodded. ''She gonna be okay?''

''I think so,'' said Chris walking towards the swings. ''I haven't seen her since last night. Can one of you see her for me?''

''Chris she's your sister! you should go see her!''

''I want to, but I'm not sure about seeing my sister who I haven't seen in years and who tried to kill me…''

''Just try…''

Chris sighed. ''Fine, I'll go see her…after you go see so I know how her mood is.''

April sighed. ''Okay.''

*…*

Back at the lair, Donnie had just finished stitching her up.

''That should do it.'' ''Thanks Donnie,'' Caitlin said with a small smile. ''No problem. Just try to rest for a while.'' ''But can't I…'' ''No. You need to rest.'' Caitlin sighed. ''Okay.'' Then there was a knock on the door, and Leo walked in since he had been waiting outside so Donnie could take care of Caitlin.

''Everything okay in here?'' ''yeah Leo just finishing up,'' Donnie closed his first aid kit, ''I'll check on you later Caitlin.'' Caitlin nodded, and he walked leaving her with Leo.

Leo grabbed a chair and sat down next to the cot. ''So how are you doing?''

She gave a look that said ''how do you think I feel?'' ''Oh,'' Leo rubbed the back of his head embarrassed, ''sorry.''

''It's ok I forgive you. And…thank you for saving my life and helping me rest.''

Leo smiled. ''It's no problem really.'' ''You can stay here with us until you get better. Then we can work together to take down Shredder.''

Caitlin frowned. ''I'm not sure about that, I wanna make him pay for everything he did to me, kill him for killing my parents, taking me away, and all those punishments he made me suffer through.''

''Killing Shredder won't make up for what happened Caitlin.''

''I just want him to suffer for once. I want him to feel my pain.''

Leo sighed. ''Caitlin,I want to help you but there's other ways to get back at Shredder instead of killing him. I don't think that's a good idea.''

''No you don't understand Leo. I lost my family to the very man I swore my allegiance to and I was put throughout hell. If you went through that, you would want revenge.''

''I would, but try understand that getting revenge would turn you into him.''

''No! your'e lying!''

It was quiet after that. Nothing but silence. Leo stared at her regretting what he said. ''Caitlin I…''

''just don't.'' Caitlin sighed. ''Please, just leave me alone for now.'' Leo nodded, stood up and left. Caitlin growled and threw her pillow at the door. ''Don't listen to him Caitlin, he's lying. And I need to get out of here.''

She slowly got out of the bed again and snuck towards the door. After checking no one was around she silently crept out of the lair, hoping nobody knew she was gone.

Back at the lair, Leo had been hanging out in the dojo after his argument with Caitlin. ''Hey Leo.'' Leo turned and saw April walked into the lair. ''April, hey what's up?''

''I came to see Caitlin where is she?''

''she's resting in the lab come on.''

April nodded and they walked towards the lab. ''So how is she?'' ''She's fine. Though I'm worried still worried about her. Where's Chris?'' ''Oh he's waiting for the right time to see her.''

Leo nodded and opened the door. But when they walked inside, the bed was empty and Caitlin was nowhere in sight.