Discover
Helen Holmes
Helen
Paul Hurst
Paul - the Brains of the I.D.B.
Leo D. Maloney
Inspector Hudson - Secret Service
Thomas G. Lingham
Sir Thomas Holstead
Katherine Goodrich
Lady Holstead
William Brunton
Hon. Fortesque Holstead
Charles Wells
Inspector Harrington - Secret Service
Directing
J.P. McGowan
Director
Writing
J.P. McGowan
Scenario Writer
Directing
J.P. McGowan
Director
Writing
J.P. McGowan
Scenario Writer