A Blueprint for Murder 1953

Synopsis:

Whitney Cameron is in a quandary: he's attracted to his beautiful sister-in-law, Lynn, but also harbors serious suspicions about her. Her husband, Cameron's brother, died under mysterious circumstances, and now that the death of her stepchild, Polly, has been attributed to poisoning, he suspects that Lynn is after his late brother's estate, and killing everyone in her way.

Directed by: Andrew L. Stone
Written by: Andrew L. Stone
Runtime: 77 minutes
Tagline: EVERY INCH OF HER IS MURDER!
Cast:
Joseph Cotten
Joseph Cotten
Whitney 'Cam' Cameron 
Jean Peters
Jean Peters
Lynn Cameron 
Gary Merrill
Gary Merrill
Fred Sargent 
Catherine McLeod
Catherine McLeod
Maggie Sargent 
Jack Kruschen
Jack Kruschen
Detective Lieutenant Harold Y. Cole 
Barney Phillips
Barney Phillips
Detective Captain Pringle