Hector Woodruff
Jerry D'Amato
Capt. Tom Warren
Master of Ceremonies
Mike Wilson
Josiah Walter Dudley
Pop Larkin
MSgt. Henry "Hank" Kowalski
Porter Hollingsway
Guffy McGovern
Calvin B. Marshall, the American
Vic Leonard
Police Ofcr. Charlie Dunnigan
Joe MacBeth
Edward L. McKeever
Rocco
Monk Lanigan
Chris Nolan
Andrew McBain
E.L. 'Big Ed' Hanley
Harry Phillips
Gus MacAuliffe
Joe Brewster
Leonard Borland aka Logan Bennett
Harry Joplin
Self (archive footage)
Professore Golfiero Paganica
Self
Self (archive footage) (uncredited)
Policeman at Front Desk (uncredited)
Man on Park Bench (uncredited)
Commentator
Paul Douglas
Paul Kadsoe
Harry Brock
Bill Fleming
Rick Blaine
Frank Parisi
Dr. Merle Gardner
Sheriff Jonas Sutton
Host
Captain McCaffrey
Lieutenant Todd Thoman
Panelist
Self - Mystery Guest
Vince Polito