"Allison, what are you doing?!"

Lydia was went back and kneeled next to Derek, putting her hand on top of his bruise.

"Come on, Lydia. It's time to go."

"No! I have to help Derek! I'm not leaving him!"

"Lydia, we have to go! You can't and you won't help him! He doesn't deserve your help, he has to suffer…"

"What? No! Are you insane, Allison?"

"He killed my mother….now he has to die too."

Allison was still pointing her arrow to Derek, but she moved from his head to his heart. Realizing that, Lydia was in front of him in a minute, blocking an attack from Allison.

"Allison, you got it all wrong! I'll not let you hurt him!"

"No Lydia, everything is very clear. He has to pay for what he has done. Now get out of the way. I don't want to hurt you."

Lydia didn't move, she just kept staring at Allison. She was her best friend, but she wasn't going to let her hurt Derek. The arrow probably had Wolfsbane, she imagined, and that's why Derek's bruise wasn't healing. He looked weak…Lydia had to do something. Suddenly an arrow passed near her arm, hitting a tree behind her and Derek. She was very surprised at first, but then she just felt anger. She was very angry. How Allison could have done that?! After keeping her in the dark for so long, Allison had the courage to shot an arrow to threaten her? To make her scared? Lydia'shands closed into fists and a ball of light appeared, hitting Allison in the chest and throwing her back. Lydia got down again and started to heal Derek, since Allison was still recovering from the sudden attack. Another arrow came in their diretion, hitting Derek in the leg, making him groan in pain. Lydia attacked Allison again, but this time she avoided it. Seeing that, Lydia hurried and created a barrier, using one hand to hold it and the other to heal Derek. Allison shot another arrow, and another, and another, but they were all blocked, but each time an arrow hit the barrier, Lydia got weaker. She still wasn't used to her powers, and doing to things at once was too much; she needed more training. Some more arrows and they would be in trouble. Fortunately, Scott and Stiles appeared, shocked by the scene in front of them.

"Wha…Allison, what happened? You said you would convince Lydia to stay away from Derek, not kill them!"

"I don't want to kill her, Stiles, only Derek, and I'm trying to convince Lydia; once Derek is dead she'll come back to us."

"No, Allison! Stop this craziness!"

"Craziness, Scott? He killed my mother! He deserves to die!"

"No, you are wrong! He didn't kill your mother because he wanted to, he-"

"Of course he did! He is a monster!"

"No! He was saving me! Your mom was trying to kill me using Wolfsbane, and he saved me, but in the process he ended up biting her! Otherwise both of us would be dead!"

"What? No…you are wrong…"

"He's telling the truth, Allison."

Derek spoke for the first time since Allison appeared. His voice was husky, showing that he was in pain. Lydia was still healing him, but it was difficult to concentrate. She looked at Allison, who was staring at Derek, tears in her eyes. Her hands started to lower down, and she turned to Scott, unable to say or do anything. Scott closed the space between them and hugged her. Allison let go of the crossbow and hugged him back, tears rolling down her face. Stiles ran to Lydia's side, to check on her.

"Are you ok? Are you hurt?"

"What did you do, Stiles?!"

Lydia punched him in the arm, clearly upset.

"I…I just told Allison about you because I thought she could convince you to stay away from this crazy supernatural stuff! I didn't know about her mother! And I certainly didn't expect she would attack you!"

"Convince me? I told I'm not leaving Derek! You have to understand that! It's my life and I do what I want!"

"But-"

"No! That's enough! Look what you have done!"

Stiles looked at Derek, who still was on the floor, but seemed a little better than before. Guilt hit him. He almost had Derek and Lydia killed.

"I'm sorry…"

"You better be! Now help me get Derek to his house."

They got up, helping Derek, who didn't want Stiles' help, but Lydia didn't let him complain. When they arrived at the broken bus, Derek lied down and Lydia kneeled next to him, healing him once more. Stiles, Scott and Allison just stood there, amazed by her powers. Finally, the wound closed and Derek was better.

"Well, now that we are not fighting between us anymore, we have to think about what we are going to do with Jackson."

Lydia looked at Stiles. Jackson? What does he had to do with all this?

"What do you mean?"

"Oh! You don't know about it yet…"

"Know about what? What's wrong with Jackson?"

They stared at each other, trying to decide who should explain, but it was Derek that spoke. He explained about the kanima, explained how Jackson became what he was now, and how he was controlled. At first, when Derek told Lydia that he was the one that bit Jackson, she looked at him horrified, betrayal in her eyes. Derek waited for her response, and after a moment her face relaxed and asked him to continue. Lydia knew Jackson's nature, she knew that he would do anything to be the best at something and wouldn't care about the ones around him, and if he was the one that asked for the bite, it wasn't Derek's fault.

After Derek finished explaining, Lydia looked at the floor, trying to absorb anything.

"So, what are we supposed to do?"

"Kill him."

"What? No!"

Lydia stared at Derek. He couldn't be serious. Kill Jackson? No way…

"Nobody is going to die. We have to find another way."

"There is no other way, Lydia."

"No, there has to be…you are not going to kill him!"

"I'll, and I'm sorry, but we are out of options here."

Lydia was shocked. He couldn't kill Jackson. He was her friend. No, she wasn't going to lose him.

"Oh, don't worry my sweet witch; there is another way, actually."

Everybody turned around surprised by the voice. It was Peter. Derek and Scott got up and were ready to attack.

"Tsc tsc..you little werewolves disappoint me. I'm not here to fight. We have a common enemy, Gerard, and the kanima, of course. We could help each other."

"Nobody is helping you."

Derek came closer to Peter, still ready to attack. He wanted to rip his heart out of his chest. He deserved that much.

"Calm down, dear nephew. I came here to tell that I know a way to save the boy."

"I don't believe you."

Lydia, on the other hand, was interested in what he had to say. She got up and walked to Derek's side, catching his hand, to stop him from doing anything stupid, and for support, she was still terrified of Peter, but now she felt stronger, and safer.

"So tell us, how do we save Jackson?"

"Huh. Such a smart girl…well, we have to use the most powerful thing in the world: human love."