Joan Crawford was reportedly offered Olivia de Havilland's role first but turned it down because she'd just played a victimized invalid in What Ever Happened to Baby Jane?
Although he had made an appearance in Irma la Douce, this was James Caan's first credited feature film role after getting his start with sporadic television parts.
The fate of Ann Sothern's character is never revealed. At one point, she is locked in a closet and never seen again.
The film was refused a cinema certificate in the UK by the BBFC and remained unavailable until 2000.