Date: June 24, 1976

Rating: PG-13

Genre: Thriller, TV Movie

Length: 1h 11min

User Score: 70%

Description: A beautiful woman, Kate (Tina Grenville), is released from a sanatorium unaware that while she was away her husband John (George Lazenby) has begun an affair with her sister Marianne (Wendy Hughes). The two sisters live together in a creepy apartment block while John is away, and find themselves stalked by some mysterious strangers.