did anyone else notice....(spoilers)? ??

near the beginning, when they are taking the picture of the track team (the scene when some are complaining because the running-in-the-woods girl is already dead so isn't there for the picture) that when they take the picture, the killer is straight up choking the girl in front of him? first he just puts his hands around her neck but as the scene ends it's clear that he's really going in on her (obviously meant to be in a joking way at the time, but i saw that and instantly knew)

"Cookies with some apple juice" - C. Giles