Donald Curtis was an American actor who had roles in dozens of films and television series.
Curtis in The Amazing Mr. X (1948)
The Amazing Mr. X, also known as The Spiritualist, is a 1948 American horror thriller film noir directed by Bernard Vorhaus with cinematography by John Alton. The film tells the story of a phony spiritualist racket. The film is prominently featured in Alton's book on cinematography Painting with Light (1949).
Theatrical release poster