A Blueprint for Murder

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)

James Gonzalez

Joe Cunningham (uncredited)

Ed Hinton

Ed (uncredited)

Jonathan Hole

Dr. Stevenson (uncredited)

Mae Marsh

Anna Swenson (uncredited)

Carleton Young

Frank Connelly (uncredited)

Joyce McCluskey

Nurse Bobbie Brownell (uncredited)

Grandon Rhodes

Probate Judge James J. Adams (uncredited)

Walter Sande

District Attorney John J. Henderson (uncredited)

Herb Butterfield

Judge at Preliminary Hearing (uncredited)

Charles Collins

Pesticide Seller (uncredited)

Oliver Cross

Club Member (uncredited)

Bess Flowers

Maggie's Friend at Club (uncredited)