Cast
Mickey McBan
Boy Watching Hercules' Act (uncredited)
Wilmuth Merkyl
Jeweler (uncredited)
Lon Chaney
Professor Echo / Granny O'Grady
Mae Busch
Rosie O'Grady
Matthew Betz
Detective Regan
E. Alyn Warren
Prosecuting Attorney
Carrie Daumery
Pet Shop Customer (uncredited)
Louis Morrison
Police Commissioner (uncredited)
Matt Moore
Hector McDonald
Victor McLaglen
Hercules
Edward Connelly
Judge
William Humphrey
Attorney for Defense
Harry Earles
Tweedledee aka Little Willie