- 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 hace el papel de Nick Burton.
Linda Hayes hace el papel de Helen Hewitt.
Raymond Walburn interpreta a Bruce Vander en la película.
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 interpreta a Ox en la película.
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 hace el papel de Sylvester Odgen 'SOS' Schofield (as Horace MacMahon).
Thomas E. Jackson interpreta a Warden Tom Hammond en la película.
Elliott Sullivan interpreta a Tony Brody en la película.
Selmer Jackson hace el papel de Dr. Harry Lindsay.
Vinton Hayworth interpreta a 'Windy' Windsor (as Jack Arnold) en la película.
Brooks Benedict hace el papel de Reporter (uncredited).
Leo Cleary interpreta a Deputy Taking Collins to Prison (uncredited) en la película.
Richard Cramer interpreta a Guard Finding Keats' Menu (uncredited) en la película.
Hal K. Dawson hace el papel de Mike, a Reporter (uncredited).
Joe Devlin interpreta a Vince Connell (uncredited) en la película.
John Dilson hace el papel de Observer at Train Station (uncredited).
Charlie Hall hace el papel de Cockney Convict Heckler (uncredited).
Kenneth Harlan interpreta a Jerry Connell (uncredited) en la película.
Eddie Hart hace el papel de Reporter (uncredited).
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 hace el papel de Guard (uncredited).
Grace Lenard interpreta a Marie Brody (uncredited) en la película.
Sam Lufkin interpreta a Convict (uncredited) en la película.
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 interpreta a Visitor's Room Guard (uncredited) en la película.
Donald McNamee hace el papel de Reporter (uncredited).
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 interpreta a Deputy Taking Keats & Kellogg to Prison (uncredited) en la película.
Sammy Stein interpreta a Mess Hall Guard (uncredited) en la película.
Harry Strang hace el papel de Convict (uncredited).
Grady Sutton hace el papel de Jock, Vander's Nephew (uncredited).
Chester Tallman interpreta a Guard (uncredited) en la película.
Anthony Warde interpreta a Max, Convict (uncredited) en la película.
Carole Wayne hace el papel de Wife of SOS (uncredited).
Charles C. Wilson interpreta a R.J. Reynolds, Sunday Editor (uncredited) en la película.
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