[Stiles and Theo are sitting in the Jeep while they stake out the animal clinic in hopes of catching the body thief]
You still wondering why I haven't said anything to Scott?
Stiles
Maybe.
You think I've got some kind of ulterior motive?
Stiles
More than likely.
Would you believe me if I said all I want... All I've ever wanted is for you guys to trust me?
Stiles
Nope.
So, you're here because you're never going to trust me?
Stiles
Yup. Glad we had this talk!
You know who you remind me of?
Stiles
[sighs] Theo, I don't care.
My sister. She was smarter than everyone, too. And a pain in the ass like you. But she always looked out for me, the same way you look out for Scott. You know, I was the one that found her body? She'd fallen into a creek and broken her leg. They told us she would've been okay if it wasn't one of the coldest nights of the year... If it wasn't for the hypothermia. And when I found her, all I could think was that I should've known. That I should've been looking out for her.
Stiles
...Why are you telling me this?
I'm telling you because even if you don't trust me, and even if you don't like me, I'm still going to be looking out for you... the way I should have been looking out for her.
You know, I saw his teeth. Donovan. He was a, uh... wendigo, wasn't he?
Stiles
Yeah.
That's the cannibal one, right?
Stiles
[nods] Native American. The myth says that if you ate human flesh, your punishment was to turn into a creature that constantly craved it.
That's a pretty judgmental myth.
Stiles
Well, I didn't make it up.
What if it was the only way to survive? I mean, you ever hear of the Donner Party? I'm pretty sure they didn't turn into wendigos.
Stiles
Well, they didn't live in Beacon Hills...
[chuckles] Good point. So what's the punishment for killing a chimera?
Stiles
[sarcastically] You spend five hours in the car with Theo Raeken. [Theo laughs] I know what my punishment is. I'm gonna lose my best friend. I'm gonna lose Scott.
If Scott really gave up on you for some piece of crap like Donovan, then he wouldn't be a True Alpha, would he?
Stiles
Or maybe that's the definition of one-- someone who doesn't put up with murder.
[rolls his eyes] It sounds like you guys need to look up "justifiable homicide."
Stiles
[side-eyes him] Did you seriously just say that to the son of a cop?
A werewolf's eyes are supposed to change color when you take an innocent life. [He flashes his gold eyes to Stiles] Do these look blue to you? It was self-defense-- for me and you.
Stiles
Or maybe you just don't feel all that bad about it. You can't say that one life is objectively less innocent than another one. What if they turn blue 'cause you feel guilty?
So it's up for interpretation?
Stiles
Yeah, maybe.
Then here's my interpretation of what happened with you and Donovan: Not guilty.
Did you feel bad about it? Not now. I mean right then, right when it happened. What were you thinking the moment you knew he was dead and there was no saving him?
Stiles
[sighs] One word-- "good."
[Theo, pleased, smirks in satisfaction, but Stiles doesn't see him]
[Theo has just finished flipping Stiles' overturned Jeep back on its wheels when they both hear a report on Stiles' police radio]
DDispatcher
[on radio] Suspect in 1-8-7 is in custody and en route to station. Suspect's name is Yukimura, Kira.
[worriedly] What's a 1-8-7?
Stiles
[shocked] Homicide.
Stiles
Hang on-- if the Nemeton's covered in bodies, shouldn't you be able to find them?
Stiles
Yes, you! That's what you do. You're the banshee! You find the bodies.
Well, the banshee's having an off-day, so how about we talk to Parrish?
[Stiles has just arrived at the animal clinic to find Scott waiting for him in the pouring rain. He's holding the wrench Stiles used to fight Donovan, and Stiles' eyes widen when he sees it]
Stiles
Where did you get that?
[Scott is shocked to learn that it really is Stiles' wrench]
This is yours? Why didn't you tell me?
Stiles
I was going to.
No, but why didn't you tell me when it happened?
Stiles
[panicking] I couldn't.
You killed him? You killed Donovan?
Stiles
Well, he was going to kill my dad. Huh, was I supposed to just let him?
You weren't supposed to do this! None of us are.
Stiles
You think I had a choice?
Stiles
Yeah, well, I can't do what you can, Scott. I know you probably wouldn't have done it. You probably would've just figured something out, right?
Stiles
[angrily] Yeah, because you're Scott McCall! You're the True Alpha! Guess what? All of us can't be True Alphas. Some of us have to make mistakes! Some of us have to get out hands a little bloody sometimes. Some of us are human!
[Scott, who didn't believe Theo's story until this point, takes Stiles' comment as confirmation that he was telling the truth and looks horrified]
Stiles
Scott, he was going to kill my dad!
But the way that it happened... There's a point when it's... it's not self-defense anymore.
Stiles
[confused] What are you even talking about? I didn't have a choice, Scott! You don't even believe me, do you?
Stiles
Okay. Alright, so... So, believe me, then. Scott, say you believe me. Say it. Say you believe me.
Stiles, we can't kill people that we're trying to save...
Stiles
Say you believe me.
Stiles
Do you believe that? Well, what do I do about this? What do you want me to do? Okay, just be... Scott, just tell me how to fix this, alright? Please, just tell me. What do you want me to do?
[sighs] Don't worry about Malia or Lydia. We'll find them. Maybe... Maybe you should talk to your dad.
[Stiles and Malia are watching as Stiles' Jeep gets towed away]
Stiles
There's not enough duct tape in the world to fix that thing.
Maybe you should find something other than duct tape.
Stiles
[sighs] It's got a bad alternator. You know, needs all new belts, transmission's going, the brake pads are basically metal on metal...
[concerned] How come you let it get so bad?
Stiles
There's been a few distractions, if you haven't noticed.
I notice. More than you think I do.
[Malia has just dropped Stiles off at the Sheriff's station so he can talk to his dad]
Are you going to tell him about Donovan?
Stiles
[shocked] You knew?
I guessed. I saw the bite on your shoulder while you were sleeping. It didn't matter to me. That's why I never said anything.
Stiles
[sighs] It matters to me.
Your dad was looking for you, Stiles. He found me instead.
Stiles
Where is he?
I covered for you. This was taken care of. If Melissa didn't find it at the hospital... Guess even the son of a cop can make mistakes.
Stiles
[angrily] Did you hurt him?
I never lied about why I came to Beacon Hills. I'm here for a pack. I came for the werecoyote, the one whose first instinct is to kill. I came for the banshee, the girl surrounded by death. I came for the dark kitsune, the Beta with anger issues... I came for Void Stiles! That's the pack I want. Unfortunately, it doesn't include Scott.
Your heartbeat's rising, Stiles. It's not because you're afraid. The Nogitsune is gone, but you've still got more blood on your hands than any of us.
Stiles
I'm about to get more.
[Stiles lunges for Theo and punches him in the face]
[Stiles is sitting on the steps at the McCall House when Theo arrives. He looks down and sees the mountain ash barrier along the doorway and smirks before dramatically stepping over it as though it were dust]
I guess we're all telling the truth now.
[Scott is hiding in the upstairs hallway so he can eavesdrop on their conversation. When Theo looks as though he caught Scott's scent, Stiles throws Scott's t-shirt at him]
Stiles
You killed my best friend?
Let's be honest, Stiles-- was he still really your best friend?
Stiles
Are you going to let my father die?
If I wanted him to die, I wouldn't have told you where you can find him.
Stiles
Then why are they saying his body is shutting down? That some poison's poisoning him and they don't know how to stop it?
[hesitates] I'm not the bad guy, Stiles. I'm just a realist. I'm a survivor. If you knew the things that I know--
Stiles
[cuts him off] Yeah, but what do you know?
I know what's coming. I know what the Dread Doctors created. And, I know what Parrish is.
[about Parrish] Lydia figured it out. I saw it in her memories.
Stiles
Right after you drove her out of her mind.
[shrugs] Collateral damage. But, if she's right about Parrish, then things around here are gonna get a lot worse.
Stiles
[scoffs] I don't care.
You should. Because if your dad does survive, he's not gonna be Sheriff of anything much longer.
Come on. Let me help. I can find the clues you can't. You can't do this alone, okay? You need me. You need all of us. I can get more help. I can text Liam--
Stiles
[scoffs] Liam just tried to kill you.
Okay, then at least let me help.
Stiles
[sighs] You believed him.
You trusted him, too. Theo got to all of us.
Stiles
You know, you don't even know the whole story.
I don't need to. All that matters right now is your dad. Come on, Stiles. We survived an Alpha Pack, a dark Druid, professional assassins... We can survive Dread Doctors and Chimeras, too.