Though not the first to be televised, this episode was the pilot and was filmed several months before any of the others. Perry has a different hairstyle and his eye makeup is not as heavy, while Paul is wearing heavy blush; they get around by taxi; Perry has a much larger office staff and refers to "one of my stenographers," and Della addresses Perry as "Chief," and "Sir."
Brian G. Hutton, who has a brief moment as the parking-lot attendant, later became the director of such major movies as Where Eagles Dare (1968), Kelly's Heroes (1970), and High Road to China (1983).
When the police are talking with Morey Allen, Della comments that the presence of police always draws the attention of patrons to a business, but Perry notes that the man eating alone showed no interest in the police being there. Three years earlier in Rear Window (1954), it was noted that Raymond Burr's character, Lars Thorwald, was the only resident of the courtyard who showed no interest in the commotion caused by the woman who discovered her dog was dead.
The murder victim has no dialogue, but is credited nonetheless.
In this episode, the viewer is given several rare insights into the Perry Mason (1957) show: Perry Mason's apartment, Paul Drake's apartment, Paul Drake's office, and Paul Drake's secretary. In addition, Mason wears the proverbial private detective's hat. For a Perry Mason fan, this is a must-see episode.