Professor Strangerson
William Walcott
Robert Darzac
Edmund Elton
Mr. Maleine
Louis R. Grisel
Mr. Mathieu
John McQuire
Mrs. Mathieu
Catherine Ashley
The Green Man
Ivan Dobble
Frédéric Larsan
George Cowl
Mathilde Strangerson
Ethel Grey Terry
Joseph Rouletabille
Lorin Baker
Jean Sainclair
Jean Del Val
Daddy Jacques
W. H. Burton
Mr. Bernier
Henry S. Koser
Mrs. Bernier
Jean Ewing
Judge Marquet
William Morrison
Assistant Director
Josef von Sternberg
Novel
Gaston Leroux
Director
Émile Chautard
Screenplay
Producer
Director of Photography
Jacques Bizeul