The Mystery Club, an organization of millionaires, draws up an agreement at the instigation of Cranahan, wagering that crimes can be committed without detection by the police; Inspector Burke serves as arbiter. A forfeiture of $25,000 is set, and the members draw secret lots to decide who is to be the criminal. When Burke himself is reported murdered, the members agree to cancel the agreement but cannot find the document.

Matt Moore
as Dick Bernard

Mildred Harris
as Mrs. Kate Vandeerveer

Edith Roberts
as Nancy Darrell

Charles Lane
as John Cranahan

Warner Oland
as Eli Sinsabaugh

Jed Prouty
as Amos Herriman

Henry Hebert
as Scott Glendenning

Károly Huszár
as Alonzo

Alphonse Martell
as Sengh

Earl Metcalfe
as Red