Snow Is a Good Forensic Tool

Investigators noticed in disbelief, that this is where the snow comes in. There was only one set of footprints leading to where tommy's body sat. What those footprints had to mean is that either tommy's killer had floated from the woods, killed him and then vanished into thin air or tommy had done this to himself. I think the assumption that tommy did it to himself is the only one they could have reached at that point - which is quite a tricky assumption to make.