Professor Strangerson

William Walcott

Acting

Robert Darzac

Edmund Elton

Acting

Frédéric Larsan

George Cowl

Acting

Mathilde Strangerson

Ethel Grey Terry

Acting

Joseph Rouletabille

Lorin Baker

Acting

Jean Sainclair

Jean Del Val

Acting

Daddy Jacques

W. H. Burton

Acting

Mr. Bernier

Henry S. Koser

Acting

Mrs. Bernier

Jean Ewing

Acting

Judge Marquet

William Morrison

Acting

Mr. Maleine

Louis R. Grisel

Acting

Mr. Mathieu

John McQuire

Acting

Mrs. Mathieu

Catherine Ashley

Acting

The Green Man

Ivan Dobble

Acting