The Unholy Three

Lon Chaney

Professor Echo / Grandma O'Grady

Lila Lee

Rosie O'Grady

Elliott Nugent

Hector McDonald

Harry Earles

Tweedledee aka Willie 'Midget'

John Miljan

Prosecuting Attorney

Ivan Linow

Hercules

Clarence Burton

Regan

Crauford Kent

Defense Attorney

Trixie Friganza

Lady Customer (uncredited)

Cecilia Parker

First Siamese Twin (uncredited)

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Linda Parker

Second Siamese Twin (uncredited)

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Ray Cooke

Sailor at Sideshow (uncredited)

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Jack Baxley

Outside Sideshow Barker (uncredited)