Alan Holt is a radio expert who has invented a death ray machine for the U.S. government. Internati…
Bill Peck is discharged from an army hospital and goes in search of a job. Cappy Ricks hires Bill, b…
The sister of a silver mine owner hires a renegade pilot to fly her to her brother's rescue.…
Hercules Napoleon Cameron, who finds his adventure in books, is searching the waterfront with Alice …
An Irish girl comes to America disguised as a boy to claim a fortune left to her brother who has die…
Boston Blackie Dawson gets some jewels that belonged to the imperial family of Russia. A gang of ter…
Sherlock Holmes is a master at solving the most impenetrable mysteries, but he has his work cut out …
A doctor's research into the roots of evil turns him into a hideous depraved fiend.…