- Chester Clute - Sidney Keats
- Shemp Howard - Professor
- Horace McMahon - Sylvester Odgen 'SOS' Schofield (as Horace MacMahon)
- Thomas E. Jackson - Warden Tom Hammond
- Elliott Sullivan - Tony Brody
- Selmer Jackson - Dr. Harry Lindsay
- Vinton Hayworth - 'Windy' Windsor (as Jack Arnold)
- Brooks Benedict - Reporter (uncredited)
- Leo Cleary - Deputy Taking Collins to Prison (uncredited)
- Richard Cramer - Guard Finding Keats' Menu (uncredited)
- Hal K. Dawson - Mike, a Reporter (uncredited)
- Joe Devlin - Vince Connell (uncredited)
- John Dilson - Observer at Train Station (uncredited)
- Charlie Hall - Cockney Convict Heckler (uncredited)
- Kenneth Harlan - Jerry Connell (uncredited)
- Eddie Hart - Reporter (uncredited)
- Dell Henderson - Dell, Deputy Taking Vander to Prison (uncredited)
- Donald Kerr - Prison Library Clerk (uncredited)
- Roger Laswell - Guard (uncredited)
- Grace Lenard - Marie Brody (uncredited)
- Sam Lufkin - Convict (uncredited)
- George Magrill - Guard in Yard (uncredited)
- Herman Marks - Convict Taunting New Prisoners (uncredited)
- Larry McGrath - Visitor's Room Guard (uncredited)
- Frank Mills - Convict Chef Dominick (uncredited)
- Bruce Mitchell - Train Conductor (uncredited)
- Frank O'Connor - Frank, Prison Guard (uncredited)
- Cy Schindell - Red Vernon (uncredited)
- John Sheehan - Deputy Taking Keats & Kellogg to Prison (uncredited)
- Sammy Stein - Mess Hall Guard (uncredited)
- Harry Strang - Convict (uncredited)
- Grady Sutton - Jock, Vander's Nephew (uncredited)
- Anthony Warde - Max, Convict (uncredited)
- Carole Wayne - Wife of SOS (uncredited)
- Charles C. Wilson - R.J. Reynolds, Sunday Editor (uncredited)
-
Ray McCarey
- Frank Fenton
-
Howard Benedict
- Roy Webb
Lee Tracy interpreta a Nick Burton en la película.
Linda Hayes interpreta a Helen Hewitt en la película.
Raymond Walburn hace el papel de Bruce Vander.
Morgan Conway hace el papel de James Brent.
Truman Bradley interpreta a Dr. William 'Bill' Collins en la película.
Virginia Vale interpreta a May Thomas en la película.
Cliff Edwards hace el papel de Happy.
Paul Guilfoyle hace el papel de Ox.
Thurston Hall interpreta a Harold Kellogg en la película.
Chester Clute interpreta a Sidney Keats en la película.
Shemp Howard interpreta a Professor en la película.
Horace McMahon interpreta a Sylvester Odgen 'SOS' Schofield (as Horace MacMahon) en la película.
Thomas E. Jackson hace el papel de Warden Tom Hammond.
Elliott Sullivan hace el papel de Tony Brody.
Selmer Jackson interpreta a Dr. Harry Lindsay en la película.
Vinton Hayworth interpreta a 'Windy' Windsor (as Jack Arnold) en la película.
Brooks Benedict interpreta a Reporter (uncredited) en la película.
Leo Cleary interpreta a Deputy Taking Collins to Prison (uncredited) en la película.
Richard Cramer hace el papel de Guard Finding Keats' Menu (uncredited).
Hal K. Dawson interpreta a Mike, a Reporter (uncredited) en la película.
Joe Devlin interpreta a Vince Connell (uncredited) en la película.
John Dilson hace el papel de Observer at Train Station (uncredited).
Charlie Hall interpreta a Cockney Convict Heckler (uncredited) en la película.
Kenneth Harlan interpreta a Jerry Connell (uncredited) en la película.
Eddie Hart interpreta a Reporter (uncredited) en la película.
Dell Henderson interpreta a Dell, Deputy Taking Vander to Prison (uncredited) en la película.
Donald Kerr interpreta a Prison Library Clerk (uncredited) en la película.
Roger Laswell interpreta a Guard (uncredited) en la película.
Grace Lenard interpreta a Marie Brody (uncredited) en la película.
Sam Lufkin hace el papel de Convict (uncredited).
George Magrill interpreta a Guard in Yard (uncredited) en la película.
Herman Marks interpreta a Convict Taunting New Prisoners (uncredited) en la película.
Larry McGrath hace el papel de Visitor's Room Guard (uncredited).
Donald McNamee interpreta a Reporter (uncredited) en la película.
Frank Mills interpreta a Convict Chef Dominick (uncredited) en la película.
Bruce Mitchell hace el papel de Train Conductor (uncredited).
Frank O'Connor interpreta a Frank, Prison Guard (uncredited) en la película.
Cy Schindell interpreta a Red Vernon (uncredited) en la película.
John Sheehan hace el papel de Deputy Taking Keats & Kellogg to Prison (uncredited).
Sammy Stein interpreta a Mess Hall Guard (uncredited) en la película.
Harry Strang interpreta a Convict (uncredited) en la película.
Grady Sutton hace el papel de Jock, Vander's Nephew (uncredited).
Chester Tallman hace el papel de Guard (uncredited).
Anthony Warde hace el papel de Max, Convict (uncredited).
Carole Wayne interpreta a Wife of SOS (uncredited) en la película.
Charles C. Wilson hace el papel de R.J. Reynolds, Sunday Editor (uncredited).
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