Harold Lockwood
Cyril Hammersley
Naomi Childers
Doris Mathers
Helen Lindroth
Lady Betty Heathcote
Kenneth Keeling
Geoffrey Mathers
William Bailey
Captain Walter Byfield
Bigelow Cooper
Sir John Rizzio
Leslie T. Peacocke
Chief of Scotland Yard
Edwin Carewe
Director
George Gibbs
Novel
Finis Fox
Scenario Writer
