Continuity mistake: As Kolchak talks with Ryder Bond about the Doppelgänger, Bond's left hand instantly goes from being on the piano to his forehead when the scene quick cuts.
Continuity mistake: As Sgt. Mayer speaks with Mrs. Sherman, Mayer's arms change position from behind his body to crossed, then back as the scene cuts.
Continuity mistake: While George Mason lies on his bed, his hands are crossed on his stomach. In the next shot, before he bursts into flames, his hands are at his sides.
