Tropical fish were not as 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 "The Dragon Murder Case" was the spark that boosted tropical fish sales nationwide.
Sergeant Ernest Heath:
Boy, I'll bet she can tell a nifty bedtime story!
When Monty enters Ruby's car at the filling station, the car door opens from the rear. When he exits her car at the Stamm house, the same door opens from the front (suicide door).
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