Shot in the inexpensive Cinecolor process, usually reserved for low-budget Westerns.
The only color film to star Bela Lugosi (he appeared in a 1930 Technicolor film, Viennese Nights (1930), but did not star in it). The only other color footage of the actor is in a wartime short in which he can be seen giving blood for the war effort.
Possibly the first film to be narrated by a corpse. This gimmick was subsequently used in Billy Wilder's classic Sunset Blvd. (1950) and the early 1994 Danny Boyle thriller Shallow Grave (1994) with a young Ewan McGregor.
When Indigo the midget steps on Raymond's feet after he insulted him, Prof. Leonid (Bela Lugosi) shouts at the little man in Hungarian, which translation as "What did you do again? Now look at yourself! Sit down and stay there!"