* FakeNationality: American Gale Sondergaard as Creole Miss Lu in 1939 version.
* ForeignRemake: ''La Voluntad del Muerto'', Spanish language version of ''The Cat Creeps'' and the Swedish MadeForTVMovie ''Katten och Kanariefågeln''.
* TheRemake: All the other films are based on the 1927 one.
* RoleReprise: Elizabeth Patterson originally played Susan in the 1930 adaptation ''The Cat Creeps'', and reprised the role for the 1939 adaptation.
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