When the recently widowed Laura Vallance advertises for the services of a butler, she doesn't reckon on the cunning Roger Masters, a ruthless con man who preys on wealthy lonely women. The personable Masters is appointed to the position and appears to be the soul of efficiency, but is in reality rapidly scheming the demise of his employer. After substituting the maid with his own partner, he sets about slowly poisoning the lady of the house with a carefully administered daily dose of poison. Confining her to her bed, Masters gradually removes from her any contact with the outside world until she verges on the edge of insanity. Frightened, half starved and desperately ill, Laura Vallance has only one hope left: her friend Hugo Fane. In order to seize control of his mistress's fortune, Masters must drive Laura Vallance over the edge before the persistent Fane can unmask the deception.
WRITTEN BY: Terence Feely based on a story by Brian Clemens
DIRECTED BY: Robert D. Cardona
PRODUCED BY: John Sichel
MAIN CAST: Michael Jayston (Roger Masters), Nyree Dawn Porter (Laura Vallance), Barry Nelson (Hugo Fane), Janet Key (Lisa), Thorley Walters (Dr Ledworth), Victor Winding (Det. Sgt. Rainer), Clare Sutcliffe (Betty), Richard Oldfield (Piers Fane)