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.
Joseph Cotten
Whitney 'Cam' Cameron
Jean Peters
Lynn Cameron
Gary Merrill
Fred Sargent
Catherine McLeod
Maggie Sargent
Jack Kruschen
Harold Y. Cole
Barney Phillips
Detective Captain Pringle
Freddy Ridgeway
Doug Cameron
Harry Carter
Wheeler (uncredited)
