After healing the leg of the murderer John Wilkes Booth, responsible for the assassination of President Abraham Lincoln, perpetrated on April 14, 1865, during a performance at Ford's Theatre in Washington; Dr. Samuel A. Mudd, considered part of the atrocious conspiracy, is sentenced to life imprisonment and sent to the sinister Shark Island Prison.
Warner Baxter
Dr. Samuel Alexander Mudd
Gloria Stuart
Mrs. Peggy Mudd
Claude Gillingwater
Colonel Dyer
Arthur Byron
Mr. Erickson
O. P. Heggie
Dr. Mac Intyre
Harry Carey
Commandant
Francis Ford
Corporal O'Toole
John McGuire
Lieutenant Lovett
