Curiosidades

Tropical fish were not yet popular in Southern California, but they were called for in the script, as one of the film's most important sets was a solarium filled with fish tanks, most remarkably, Siamese fighting fish. Pet stores did not stock them as there was no demand. Then an advanced collector located in the San Fernando Valley agreed to have his collection rented. The appearance of tropical fish in this film was the spark that boosted tropical fish sales nationwide.

When Philo Vance says he has bred tropical fish, he actually is echoing the experience of the original story's author, S.S. Van Dine, who owned numerous aquariums and was a member of the New York Aquarium Society.

According to a contemporary article in the Motion Picture Hearald, this is the first "Philo Vance" film to star Warren William instead of William Powell.

The price of gasoline at the station where Monty pulls in with a flat tire is 9 gallons for $1 or about 11.1 cents/gallon.

This film's earliest documented telecast took place in Chicago IL Friday 8 November 1957 on WGN (Channel 9); it first aired in Sacramento CA Friday 22 November 1957 on KCRA (Channel 3), in Tucson AZ Friday 25 November 1957 on KGUN (Channel 9), and in Baltimore MD Friday 20 December 1957 on WMAR (Channel 2).