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)

Teddy Mangean

Attendant (uncredited)

Tyler McVey

Police Lab Technician (uncredited)

George Melford

Bailiff (uncredited)

Harold Miller

Lynn's Lawyer (uncredited)

Hans Moebus

Lawyer (uncredited)

Eugene Borden

Headwaiter (uncredited)

Raymond Gray

Waiter (uncredited)

Arthur J. Flaven

Waiter (uncredited)

Jack Deery

Restaurant Patron (uncredited)

Kenneth Gibson

Restaurant Patron (uncredited)

Don Kohler

Ship's Officer (uncredited)

Thomas Martin

Ship's Cocktail Waiter (uncredited)

Alex Ball

Ship's Passenger (uncredited)

Herbert Lytton

Ship's Doctor (uncredited)

Bert Stevens

Ship's Headwaiter (uncredited)

Charles Tannen

Detective (uncredited)

Bernard Sell

Detective (uncredited)

Julian Upton

Detective (uncredited)

Guy Kingsford

Detective (uncredited)

Herbert Ellis

Detective (uncredited)

Ray Hyke

Hospital Pharmacist (uncredited)

Aline Towne

Hospital File Clerk (uncredited)

Marjorie Stapp

Nurse (uncredited)

Sally Yarnell

Nurse (uncredited)

Pamela Duncan

Nurse (uncredited)