Visible crew/equipment: On the patio at Hughes house a crew member can be seen through the windows inside the house.
Revealing mistake: On both occasions when Sandra is sitting in the boat going out on the lake to dive actress Amanda Redman has obviously been replaced by a stunt double.
Superintendent Sandra Pullman: She's not my girlfriend, she's my shrink.
Gerry Standing: A shrink.
Brian Lane: Why does she need to see a shrink?
Jack Halford: You're the expert, you tell us.