Director/a
Edward A. Kull
DIRECTOR/A
Escritor/a
Jacques Futrelle
ESCRITOR/A
George W. Pyper
Robert F. Roden
Reparto (por orden de créditos)
Eileen Sedgwick
Doris Harvey
George Chesebro
Bruce Weston
Frank Clark
Julius Zeidt
Burton S. Wilson
John Harvey
Alfred Fisher
Professor Harvey
Josephine Scott
Aline Earl
Lew Short
Reitman
Albert J. Smith
Professor Ramsey
