The Diamond from the Sky

The story of a boy, a dog, and a man. The boy discovers he is heir to a shipping line, and travels to Los Angeles, accompanied by inventor/radio operator Bob Whitlock and Irene Blaine. Their journey is aided by Pal, a wolf dog.

Jack Windom experiences a sensation of awe at the reception of the Hindoo dagger from his old chum, Tom, who was traveling in India. Hanging the dagger on the wall. Jack goes out. For some time Jack has discerned a coolness in his wife, and his jealous misgivings were verified when he returned and found her in company with a stranger. Seizing the dagger from the wall he chases the recreant lover from the house and then follows the wife to the bathroom, wither she has flown in terror. Mercilessly he plunges the dagger and flies the place. The lover in hiding sees him leave and returns, and calling aid succeeds in reviving the wife, who afterwards with careful treatment recovers and marries her paramour. However, either from the baneful influence of this diabolical dagger, or the woman's capricious nature, just one year later the second husband enacts the same scene, but with fatal results.

Notorious pirate Joaquin Santos lives by the saying, "Dead Men Tell No Tales". He conspires with the prominent Squire Rattray to take over and plunder the Lady Jermyn, a ship carrying a considerable amount of gold, and then destroy the ship and kill its crew. Rattray, who is in love with Santos' daughter Eve, agrees to pick up the pirate, his crew and their loot on his private yacht after the deed is done. However, young George Cole, a passenger on the Lady Jermyn who is also in love with Eve, survives the attack and sets out to find her.

A police detective is caught up in a plot to steal two million dollars in bonds.

An expedition arrives on an uncharted jungle island to rescue the local natives, led by a jungle boy, from a volcano that is about to erupt.

A newspaper publisher and his Korean servant fight crime as vigilantes who pose as a notorious masked gangster and his aide.

An accomplished aviator sets out to locate treasure hidden by one of his ancestors. He encounters interference from various adversaries.

The film is about a desert-bound member of the French Foreign Legion who exposes a betrayer to the Legion and is then sent on a mission among the Arabs to conclude the signing of a crucial peace treaty.

Greedy traders have kidnapped a researcher, hoping he will reveal the location of a treasure in a hidden village. Family and friends of the researcher come looking for him. Adventure ensues.

Congo Bill is hired to locate an heiress lost somewhere in Africa.

The obsessive scientist Dr. Miller is working on a matter-transmitter invention called the Paratron; a conspiratorial team of spies and no-goods pursue him to Alaska, trying to steal the device.