Charlie's visit to Paris, ostensibly a vacation, is really a mission to investigate a bond-forgery racket. But his agent, apache dancer Nardi is killed before she can tell him much. The case, complicated by a false murder accusation for banker's daughter Yvette, climaxes with a strange journey through the Paris sewers.

Before his daughter can formally claim her rightful title, her father dies. Now her blue-blooded American suitor finds that his father refuses to allow the two to marry as she is not a high-born lady.

Movie star Shelah Fane is seeing wealthy Alan Jaynes while filming in Honolulu, Hawaii, but won't marry him without consulting famed psychic Tarneverro first. Enter inspector Charlie Chan of the Honolulu Police, investigating the unsolved murder, three years earlier, of a Hollywood actor.

A gang of crooks wrestles with the temptation to rob the bank that they now manage.

Bob Carter, a member of the Foreign Legion, is glad to see his brother, Don, for the first time in ten years but is sorry that Don has joined the Legion. Bob, Don and Bob's buddies, Muggsy and Bilgey, go to a café and there Don falls for Nina, a singer in love with Bob. Bob doesn't know this and thinks she is Garccia's girl, and warns Don to have nothing to do with her. Don disregards the warning and Garcia discovers Nina and Don together and provokes Don into hitting him. Don is arrested and thrown into the company brig. Nina, with the aid of an Arabian sheik, Ul Ahmed, helps Don escape. Bob, Muggsy and Bilgey follow but are captured and taken to Ul Hamid's headquarters. The sheik tortures Don to force Bob to work some captured machine guns for him. Ah Hamid and his tribe attack the fort, but Bob manages to turn the machine guns against his captors, and the fort is saved.

J. Carrol Naish plays a slimy villain again; this time he's running a casino on a ship and smuggling furs past the Coast Guard.

Runyonesque crooks on the lam hide out on blind man's pastoral farm and decide to go straight.

Young heiress Ann Jordan and her fiancè Frank Oakes would be happy except for the constant appearance of Robert Metcalf, who follows her or them everywhere. This continues into their time at the country club, even interfering with tennis games. The two boys are constantly arguing, and Ann grows weary of them both, and after a knock down, drag out fight that destroys the Jordan garden, they realize she has fallen for an older man, Jack Gardner, an engineering friend of her father.

Young heiress Ann Jordan and her fiancè Frank Oakes would be happy except for the constant appearance of Robert Metcalf, who follows her or them everywhere. This continues into their time at the country club, even interfering with tennis games. The two boys are constantly arguing, and Ann grows weary of them both, and after a knock down, drag out fight that destroys the Jordan garden, they realize she has fallen for an older man, Jack Gardner, an engineering friend of her father.

Lassiter's sister was killed and her young daughter taken and raised by outlaws. Years later Lassiter arrives at the Withersteen ranch looking for the now grown daughter. He immediately gets caught up in the ranch's struggle against rustlers. Trailing a rustled herd of horses leads him to the rustler's hideout and the missing daughter.