Gloria Stuart's real-life husband, writer Arthur Sheekman, can be briefly glimpsed walking behind her in the hallway during Ruth Etting's number.
Billy Barty (as the infant Gabney), along with Dick Elliott and Florence Enright as his parents, had their scenes cut before release.
Douglass Montgomery appears not in the feature film itself, but only in publicity photos alongside Karloff and Lugosi in the big radio sketch.