A mad scientist uses captured criminals as experiments for his study on "the criminal mind" aboard his private ship.
Brass Bancroft and his sidekick Gabby Watters are recruited onto the secret service and go undercover to crack a ruthless gang that smuggles illegal aliens.
A mad scientist attempts to rule the world by creating various elaborate inventions.
A two-fisted Canadian Mountie leads lawmen in pursuit of the thieves who stole an Edmonton-bound freighter's cargo.
A San Francisco astrologer correctly predicts a ship passenger's death and then helps the police look for the murderer.
When a banker is found shot dead with a gun in his hand, his daughter refuses to believe it is a suicide. With the help of a detective, she hopes to get to the bottom of the case.