My wife, who's been watching it with me, said she knows who did it in the British version from which it's based. Sigh. I so wanna ask her but won't. She did say it's not stupid (iho) and is someone I've mentioned. I've mentioned:
Petey/his mom via Freddy
Duane Reed
Hearse dude
Trevor (guy with Duane Reed)
Neighbor
Stepdad
Naz
That's it I think. I've mentioned seven guys. I can't fathom how it can be Trevor. He had the same clothes prior to the murder and right after. If it's the hearse dude, that's just retarded h hum L&O TV. So corny. I highly doubt it's the neighbor. Sure, I wonder why he was looking out the window at 1am or so but if he did it, why the hell would he call the cops and such? I know some killers like toy with the cops but this outcome would be silly imo.
So that leaves Petey/his mom, Duane Reed, the stepdad, or Naz. My guess is it was Petey/the mom/OR Duane Reed via Freddy and NOT the stepdad which to me would also just be normal, L&O type tv and corny.