Anstruther MacDonald

Two lovers are living together and are not married; they had made a promise as children to get married when they grew up, but they "didn't wait."

The villainous Dr. Fu Manchu races against a team of Englishmen to find the tomb of Ghengis Khan, because he wants to use the relics to cause an uprising in the East to wipe out the white race.

Socialite Letty Lynton is returning to New York, abandoning one-time lover Emile Renaul in South America, when she strikes up a shipboard romance with Jerry Darrow. Renault is waiting for her in New York and will not leave her alone, so she poisons him. When detectives take her to the D.A.s office, Jerry cooks up an alibi.