The Deadly Triangle Details Casts Posters Title The Deadly Triangle Release Date 1977-05-19 Runtime 01 Hours 15 Minutes Genres Mystery Crime Drama TV Movie Production Companies Columbia Pictures Television, Barry Weitz Productions, NBC Production Countries United States of America Dale Robinette... Bill Stedman... Taylor Lacher... Archie Sykes... Geoffrey Lewis... Red Bayliss... Robert Lansing... Charles Cole... Diana Muldaur... Edith Cole... Linda Scruggs... Joanne Price... Maggie Wellman... Merrie Leonard... James Coleman... Dwight Thatcher... Tom McFadden... Wayne... Original Size (500x750)