Cast
Cliff Edwards
Happy
Chester Clute
Sidney Keats
Horace McMahon
Sylvester Odgen 'SOS' Schofield (as Horace MacMahon)
Richard Cramer
Guard Finding Keats' Menu (uncredited)
Shemp Howard
Professor
Joe Devlin
Vince Connell (uncredited)
Frank Mills
Convict Chef Dominick (uncredited)
Cy Schindell
Red Vernon (uncredited)
Virginia Vale
May Thomas
Dell Henderson
Dell, Deputy Taking Vander to Prison (uncredited)
Donald Kerr
Prison Library Clerk (uncredited)
Frank O'Connor
Frank, Prison Guard (uncredited)
Raymond Walburn
Bruce Vander
Thomas E. Jackson
Warden Tom Hammond
Hal K. Dawson
Mike, a Reporter (uncredited)
Charlie Hall
Cockney Convict Heckler (uncredited)
Anthony Warde
Max, Convict (uncredited)
Truman Bradley
Dr. William 'Bill' Collins
Thurston Hall
Harold Kellogg
Selmer Jackson
Dr. Harry Lindsay
Leo Cleary
Deputy Taking Collins to Prison (uncredited)
John Sheehan
Deputy Taking Keats & Kellogg to Prison (uncredited)
Grady Sutton
Jock, Vander's Nephew (uncredited)
Charles Cahill Wilson
R.J. Reynolds, Sunday Editor (uncredited)
Paul Guilfoyle
Ox
George Magrill
Guard in Yard (uncredited)
Sammy Stein
Mess Hall Guard (uncredited)
Lee Tracy
Nick Burton
Brooks Benedict
Reporter (uncredited)
John Dilson
Observer at Train Station (uncredited)
Sam Lufkin
Convict (uncredited)
Elliott Sullivan
Tony Brody
Vinton Hayworth
'Windy' Windsor (as Jack Arnold)
Kenneth Harlan
Jerry Connell (uncredited)
Harry Strang
Convict (uncredited)
Linda Hayes
Helen Hewitt
Morgan Conway
James Brent