Did anyone else figure out the 'twist' immediately?
As soon as they mentioned that his M.O. was drugging his victims with cake, I stopped the movie and called exactly what the twist was going to be. I figured it wasn't just a coincidence that the detective had a daughter like the other two men. Then I put the cake flashback together with the actual killer's MO and figured out that he wasnt really giving his actual daughter the cake
Did anyone else figure this out early too? also, for a time after that I did briefly second guess myself, when the father kept talking to his parents, yet made no reference to the fact that he recently lost a daughter (I believe this was intentional on the director's part).
Also, are we supposed to assume that the head was actually in the location the teacher specified? another poster pointed out that the father came back and said "I'll make it quick", which implied that he actually found what he was looking for. that being said, I thought the camera was pretty clear in showing that the father was digging an empty hole.