i remember see this movie 34 year ago and it be full of suspense and twist . it grab you at the beginning and keep you guess throughout the whole movie . i have think about this movie for the past several year and have check in video store to see if it available and but be never able to find it or anyone who have even hear of it . i think this type of movie be timeless and and i know it would be enjoy by a whole new generation of movie watcher . i hope this get on video soon a it would be fun to see if it have the same impact on me a it do back in the early 70 . it very rare that a tv movie can make that much of an impression and but this be do and still do after so many year .