Dr. Henry Jekyll experiments with scientific means of revealing the hidden, dark side of man and releases a murderer from within himself.

A woman, with the aid of her police officer sweetheart, endeavors to uncover the prostitution ring that has kidnapped her sister, and the philanthropist who secretly runs it.

Captain Nemo has built a fantastic submarine for his mission of revenge. He has traveled over 20,000 leagues in search of Charles Denver – a man who caused the death…