Calculated Nightmare (1970)

Release Date:	1970, November 6
Directors:	John Reardon
Countries:	United Kingdom
Production:	London Weekend Television
Cast:	Michael Culver, Peter Madden, John Stratton, Larry Dann, Ursula Mohan

Overview:

Two business executives are trapped for the night on a deserted office floor by a disgruntled employee who has hacked the elevator system.