Bud Abbott

Bud Alexander

Lou Costello

Lou Francis

Nancy Guild

Helen Gray

Arthur Franz

Tommy Nelson

Adele Jergens

Boots Marsden

Sheldon Leonard

Boots Morgan

William Frawley

Det. Roberts

Gavin Muir

Dr. Philip Gray

John Daheim

Rocky Hanlon

Bobby Barber

Sneaky (uncredited)

Ralph Brooks

Man at Bar (uncredited)

Chester Conklin

Counter Man (uncredited)

Russ Conway

Newspaperman (uncredited)

Sayre Dearing

Reporter (uncredited)

James Dime

Man in Gym (uncredited)

Ralph Dunn

Motorcycle Cop (uncredited)

George Ford

Reporter (uncredited)

Edward Gargan

Milt (uncredited)

Harold Goodwin

Bartender (uncredited)

Dick Gordon

Man (uncredited)

Chuck Hamilton

Policeman (uncredited)

Stuart Holmes

Fight Spectator (uncredited)

Kenner G. Kemp

Policeman (uncredited)

Donald Kerr

Fight Spectator (uncredited)

George J. Lewis

Torpedo Al (uncredited)

Rory Mallinson

Tough Guy in Bar (uncredited)

Mathew McCue

Graduation Spectator (uncredited)

Hans Moebus

Restaurant Patron (uncredited)

Ralph Montgomery

Photographer (uncredited)

Monty O'Grady

Fight Spectator (uncredited)

Jack Perrin

Dugan Detective School Graduate (uncredited)

Jack Perry

Rocky's Handler (uncredited)

Victor Romito

Waiter (uncredited)

Syd Saylor

Waiter (uncredited)

Carl Sklover

Lou's Handler (uncredited)

Herb Vigran

Stillwell (uncredited)

Billy Wayne

Rooney - Rocky's Manager (uncredited)