Director: Don Chaffey
Writer: Robert Hamer
Stars: Leo McKern, Janet Munro and Maxine Audley
Genres: Comedy
Originally intending to use the poison for the good of mankind, McKern snaps when university politics threaten his experiments, and he begins to bump off his enemies with the poison.
Eventually McKern's well-endowed girl friend and lab assistant, Munro, begins to suspect that she's next on his list and threatens to expose him unless he divorces his wife and marries her.
McKern laughs at her attempt to have him arrested because the poison leaves no trace, and he defiantly lights up a cigarette to wait for the cops to come.
He too realizes too late that he's just smoked a poisoned cigarette.
A poised and sophisticated comedy written by one of the most stylish screenwriters and directors in the Ealing stable, Robert Hamer, just before he died, and directed by Don Chaffey, noted for his saucy comedies and adults-only pictures.

