Deadly Nightshade. (1953 film).

A convict on the run switches identities with a lookalike, only to find himself in even deeper trouble.

Emrys Jones - Matthews / Barlow
Zena Marshall - Ann Farrington
John Horsely - Inspector Clements
Joan Hickson - Mrs. Fenton
Hector Ross - Canning
Roger Maxwell - Col. Smythe
Lesley Deane - Mrs. Smythe
Marne Maitland - Heinz
Frederick Piper - Mr. Pritchard

Director: John Gilling