Trivia

Shot on a budget of only $2,500.

Included among the "1001 Movies You Must See Before You Die", edited by Steven Schneider.

This film was selected to the National Film Registry, Library of Congress, in 1991.

At approximately 45 minutes into the film, the TV show running on the television (while David makes the phone call to Penny) is "The Architects of Fear" from the TV series THE OUTER LIMITS.