So many things wrong with this movie. (Spoilers)
A killer who wears a pinkish/red hoodie instead of a dark color? He tampers with a light (or whatever it was) on the front of the mansion so it will fall later and kills someone, and he does this when it's daylight, and nobody sees him in the bright hoodie as he's on a ladder? When the dark haired girl leaves she decides to have the driver stop so she can take a picture and the killer just happens to be in that same spot so he can stab her? Hayley is called to the beach, sees police zipping up a body bag and asks what's up?
Dumb movie and it was obvious early on who the killer was.