This Boris Karloff movie was very entertaining though it seemed strongly inspired by the earlier film, THE PRISONER OF SHARK ISLAND since there were so many similarities between the two movies. SHARK ISLAND is an account of the real life man, Dr. Samuel Mudd, who was sentenced to a harsh American prison in the Tortugas after he gave medical treatment to a fleeing John Wilkes Booth. Whether or not Mudd knew that Booth had just killed the President is debatable--especially since word of the assassination may not have reached Mudd's home in rural Maryland.
In much the same way, Boris Karloff plays a doctor who attends to a seriously injured man. Although Karloff knows the man was guilty, as a doctor he'd taken an oath to heal and couldn't just let the man die. As a result of his kindness, he's arrested and sent to Devil's Island, where he is abused and treated like an animal. What happens next you'll have to see for yourself, but I was very impressed by this simple film that wasn't really a horror film but a film about the human spirit and justice. Karloff, in particular, did a nice job in his role as the hapless doctor, though the script was also very good--making the viewer really care about these men in prison.
The only negative, and it's a small one, is the prologue. Because the war in Europe was just beginning, the producers wished to distance themselves from condemning this French institution and so they tacked on a nice prologue saying that this film didn't represent the French people of today. This seemed rather unnecessary, as other prison films don't have similar introductions.
