"The Prisoner of Shark Island" is the story of one Samuel Mudd, a Maryland physician. The good doctor is ably played by Warner Baxter. After assassinating President Lincoln, John Wilkes Booth hurt his leg jumping from a balcony. Eluding the Law, JWB called on Mudd, who set the leg without knowing Booth's true identity. The pursuing Fed troops treat Mudd as a conspirator and he is sentenced to life in a military stockade. The "trial" is an unvarnished martial law kangaroo court. The "Shark Island" here is actually Dry Tortugas Island, off the coast of Key West, FL. PSI deals with the efforts of Mudd and his wife to win exoneration. There is excellent work here, especially by Gloria Staurt as a fiercely loyal wife standing by her man, and Harry Carey Sr. as the prison commandant. In PSI, all the prison guards are African American. They receive interesting treatment, given the historical setting of both the Civil War and climate of mid 1930s, when PSI was made. A good review doesn't reveal endings but the one here is thoroughly satisfying. One may wish to have a tissue handy. Even in the 1930s, John Ford could be sentimental! This reviewer benefited from a brand new CD, clear and sharp. PSI is one of those oldies which are not over shown/overexposed. Amazoners are urged to make an effort to view it. Highly recommended!