Lon Chaney
Professor Echo / Granny O'Grady
Mae Busch
Rosie O'Grady
Matt Moore
Hector McDonald
Victor McLaglen
Hercules
Harry Earles
Tweedledee aka Little Willie
Matthew Betz
Detective Regan
Edward Connelly
Judge
William Humphrey
Attorney for Defense
E. Alyn Warren
Prosecuting Attorney
Margie Angus
Twin (uncredited)
