Calling Philo Vance

All the scenes involving the two murdered men are taken directly from the earlier mystery called The Kennel Murder Case (1933), in which William Powell played Philo Vance. In both movies, most of the dialog in the scenes pertaining to the murders and the investigation is exactly the same, word-for-word, which clearly indicates that the script from the 1933 film was adapted to the story for this film, which focuses on the theft of secret aircraft plans. However, in "The Kennel Murder Case", the plot concerns stolen Chinese art objects.

Ralph Forbes is credited onscreen as "Tom MacDonald," but throughout the film, he is called Taylor MacDonald.