I just wanted to - to help anyone, anyone, okay? Alex, you saw him, you -

[The man he killed. The man he slammed a knife into, puncturing his throat until it spouted red and left Tim gasping, retching, in the aftermath. The man who told him that was the only way - the only way to really, truly end it.]

I didn't want to do - I wanted to help. I wanted to help. He knew I was the source, and if we could've fought it together, maybe we could've -

[He pushes both hands up against his face, through his hair, trying to fight the shudder racing up his spine.]

He said it was the only way. If there was anyone left, I had to kill them.

And then myself.

[He's a killer. He knows that. She knows that. She's seen it.]

[He never wanted to.]