Continuity mistake: Ray falls off Ben's boat towards the end. Yet when he gets back on board he's dry.
Other mistake: When Julie goes onto the boat to call the police, she sees a collection of newspaper articles and photos stuck to the wall. The photos, however, were taken earlier that same day. Unless they were printed from a colour printer on gloss paper the killer owned in between chasing all of them, there was not enough time to develop them and stick them up. (01:25:15)