This seventies reincarnation of the classic Thriller series for British television created a few gems, and more than a few fillers. This Brian Clemens scripted psychological thriller has quite a few red herrings (that is expected of the genre), but has a thoroughly satisfying ending, in which two entirely different plot arcs verge nicely. Carroll Baker is the one to watch, still elegant though bound to a wheelchair. Ronald Lacey is the creepy apartment repairman who may or may not be harboring secrets. I believe this is only available Stateside through an OOP Thriller Video.