Continuity mistake: Near the beginning of the film when Abby and Neil sit down at the table drinking wine, the amount of wine in Abby's glass changes from almost full to almost empty between shots.
Plot hole: Spoiler Warning. It turns out that Dan Merrick is actually Jack Stanton after a whole lot of reconstructive surgery to make him look like Dan Merrick. Everything is believable except that he has Dan Merrick's voice as well. He should have Jack Stanton's voice.