Plot hole: On the bus, Ray has a prescription medication. Where did he get it since he broke out of the hospital?
Plot hole: At the end, Julie doesn't notice the muddy footprints on the floor or wonder how the window got open? And Ray doesn't say a word when the bathroom door shuts by itself?
Plot hole: After the Hook Man kills Dave, he uses the pickup driving toward Ray that knocks him off the road, and knocks him out. The Hook Man could just walk to an unconscious Ray and kill Ray easily with his hook.
Answer: I believe it was supposed to be a surprise plot twist, I don't remember there being any indication that Will was setting them up.