Time Cut

In my opinion, the identity of the killer was very obvious from the beginning. And the only reason not to suspect him would have been because he was present in every murder scene however the moment they found out the killer was from the future as well, it very clear who it was. To be honest, I really disliked the ending. It was a cheap way to not have to deal with the mechanics of time travel (like the grandfather paradox, or if it created a parallel universe).  One of the only things I liked about this movie was that Summer was gay. And that Quinn wore a D&D t-shirt on multiple occasions.