"Fictionalized account of Ferdinand Waldo Demara Jr., who stole or created fictional identities and worked in a variety of occupations, most quite successfully."
Tony Curtis
as Ferdinand Waldo Demara Jr. / Martin Donner / Dr. Gilbert / Ben. W. Stone / Dr. Joseph Mornay / Robert Boyd Hammnd
Karl Malden
as Father Devlin
Edmond O'Brien
as Capt. Glover - HMCS Cayuga
Arthur O'Connell
as Warden J.B. Chandler
Gary Merrill
as Pa Demara
Joan Blackman
as Lt. Catherine Lacey
Raymond Massey
as Abbott Donner
Robert Middleton
as R.C. Brown
Jeanette Nolan
as Ma Demara
Sue Ane Langdon
as Eulalie Chandler
Larry Gates
as Cardinal
Mike Kellin
as Clifford Thompson
Frank Gorshin
as Barney
Cindi Wood
as WAC Lieutenant
Dick Sargent
as Hotchkiss
Robert Crawford Jr.
as Fred Demara Jr. (as Robert Crawford)
Doodles Weaver
as Farmer Hauling Fertilizer
Ward Ramsey
as Lieutenant Commander Howard - HMCS Cayuga
David White
as Dr. Hammond
Philip Ahn
as Capt. Hun Kim
Herbert Rudley
as Senior Officer
Jerry Paris
as Defense Lieutenant
Harry Carey, Jr.
as Dr. Joseph Mornay
Willard Sage
as Lt. Thornton
Russ Conway
as Sgt. Wilkerson (uncredited)
James Dobson
as Sailor (uncredited)
Richard Gaines
as State Official (uncredited)
Bob Herron
as Highway Patrol Officer (uncredited)
Herbert Lytton
as Reporter (uncredited)
Frank Maxwell
as Tirdell (uncredited)
Michael Ford
as Soldier (uncredited)
Dan Sheridan
as RCN Chief (uncredited)
Charles Cane
as Sheriff (uncredited)
Gage Clarke
as Mr. Warren (uncredited)
John Cliff
as Marine Major (uncredited)
Robert Dornan
James Drake
as Seaman (uncredited)
Bob Hastings
as State Department Official (uncredited)
Dale Ishimoto
as Korean Soldier (uncredited)
Robert Kino
as Korean Officer (uncredited)
Ted Knight
Oliver McGowan
as RCN Commander (uncredited)
Don Ross
as Sergeant (uncredited)
Paul Sorensen
as Guard (uncredited)
Tom Steele
Warren Vanders
as Minor Role (uncredited)
Robert Mulligan
Director
Frank H. Wilkinson
Sound
Bud Westmore
Makeup Artist
Joseph Gershenson
Music Supervisor
Joseph E. Kenney
Assistant Director
Liam O'Brien
Screenplay
Larry Germain
Hairstylist
Waldon O. Watson
Robert Crichton
Novel
Henry Mancini
Music
Robert Arthur
Producer
Henry Bumstead
Art Direction
Julia Heron
Set Decoration
Alexander Golitzen
Robert Burks
Director of Photography
Frederic Knudtson
Editor
Stunts