Continuity mistake: When they meet the actress, a boat comes onto the screen from the right side traveling to the left just behind Adam Sandler. When they cut from the actress to the couple the boat behind Adam is no longer there. Nor is it when they walk away. (00:21:34)
Continuity mistake: After the first murder, the position of the fountain pen on the clipboard with the will keeps changing between shots (sometimes it's entirely on top of it, some other times part of it is off). (00:32:00)
Continuity mistake: When Jennifer and Adam are in bed discussing who was the killer, the sheet under her right arm is lifted up then is down between shots. This goes up and down till you hear a gun shot. (00:36:35)
Continuity mistake: After Sandler shaves in the cabin he gets back on the deck unshaved. When they appear at the dinner he is shaved.
