Coming in a bit late, but I'm reading the story, nevertheless.
I can't put my finger on why, but I don't necessarily trust Mike, the Youth Minister. I'm not so sure about Zack, Jesse, or Asher. Zack and Jesse, because of their homophobic stance. Asher, because he said he would kill Seth. And, of course, Killian's Dad.
I did like the way you treated the death scene. It wasn't overly gory, as a lot of writers make it. However, there is one thing that almost everyone gets wrong. Unless you know what you are doing, you will get a ton of blood all over you. I won't go into the gory details, but cutting either the left or right (or both) carotid arteries allows the heart to pump a tremendous amount of blood quickly. It goes all over.