Merchants hire a foreign criminal to kidnap a scientist for the secret of manufacturing diamonds.
Jack Buchanan
as Captain Hugh Drummond
Betty Faire
as Phyllis Benton
Juliette Compton
as Irma Peterson
Allan Jeayes
as Carl Peterson
Austin Leigh
as Professor Goodman
Frank Goldsmith
as Sir Raymond Blayntree
Edward Sorley
as Julius Freyder
Phil Scott
as Sparring Partner
