 Vincent PriceDr. Warren Chapin | Dr. Warren Chapin |
 Philip CoolidgeOliver 'Ollie' Higgins | Oliver 'Ollie' Higgins |
 Judith EvelynMrs. Martha Ryerson Higgins | Mrs. Martha Ryerson Higgins |
 Darryl HickmanDavid Morris | David Morris |
 Pamela LincolnLucy Stevens | Lucy Stevens |
 Patricia CuttsIsabel Stevens Chapin | Isabel Stevens Chapin |
 William CastlePrologue Host (uncredited) | Prologue Host (uncredited) |
 Bob GundersonRyerson - Screaming Convict (uncredited) | Ryerson - Screaming Convict (uncredited) |
 Dal McKennonProjectionist (uncredited) | Projectionist (uncredited) |
| LLeon AltonMember of Silent Movie Audience (uncredited) | Member of Silent Movie Audience (uncredited) |
 Gertrude AstorMember of Silent Movie Audience (uncredited) | Member of Silent Movie Audience (uncredited) |
 Richard BarthelmessDavid Kinemon (archive footage) (uncredited) | David Kinemon (archive footage) (uncredited) |
 Gail BonneyMember of Silent Movie Audience (uncredited) | Member of Silent Movie Audience (uncredited) |
| PPat ColbyMember of Silent Movie Audience (uncredited) | Member of Silent Movie Audience (uncredited) |
| GGeorge DeNormandMember of Silent Movie Audience (uncredited) | Member of Silent Movie Audience (uncredited) |
| AAmy FieldsMember of Silent Movie Audience (uncredited) | Member of Silent Movie Audience (uncredited) |
| CClarence StraightMember of Silent Movie Audience (uncredited) | Member of Silent Movie Audience (uncredited) |
 Ernest TorrenceLuke Hatburn (archive footage) (uncredited) | Luke Hatburn (archive footage) (uncredited) |
