Corporal Larry Grant and Sergeant “Mac” McGowan, of the United States Marine Corps, are rival for the love of Frances Schiller, but team up to hunt down “The Tiger Shark,”…

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

Jenny is carrying the child of a young man who dies in the San Francisco earthquake (1906). After giving birth, she decides to place her child in the custody of…

The Eagle uses sky writing to make threats against a corporation. Nathan Gregory owns a travelling fairground and is thought to be the Eagle. Craig McCoy is a pilot who…