Perry Mason occupies suite 904 of his office building. We meet Barney the elevator operator in his building.
This is one of the two episodes in which Perry loses the case and the jury declares his client guilty. The other is #185 The Case of the Deadly Verdict.
Perry Mason's office is located in the Brent Building owned by his client Stewart Brent.
When the murder weapon is being passed among the jurors, a close-up shows juror #4 about to hand the gun to juror #5. As the scene switches to a far shot, the gun appears in the hand of juror #7 who then passes it to juror #8.
We see Perry Mason's living room and Della Street's bedroom.
Perry says goodbye to Gow Loong in Chinese (Zai jian).
Dr. Maitland, supposedly a renown psychiatrist, says that Helen Reed is schizophrenic, when she is actually suffering from multiple personality disorder (now known as dissociative identity disorder).
After the fire trucks arrive we see Perry talking with the neighbors, followed immediately by a close-up of him watching the fire and then segues back to him talking with the neighbors as Paul returns.
Paul Picerni's character states that he's suffering from tuberculosis yet he smokes like a chimney throughout the entire episode.
Paul Picerni's character is an escapee from a correctional institution who doesn't want his true identity to be discovered. So what's he doing sitting in the courtroom during the trial?
Perry Mason's office telephone number is Madison 51190.
We learn that Perry Mason's office phone number is MA5-1190 (Madison) when Doris Stephanak tells the operator what number to call.
We don't see Sheila step down from the stand after her second testimony. We do see two spectators sitting next to each other behind Burger while the judge tells Burger to examine her testimony for perjury and the next witness, the sheriff, being called to the stand. We next see Sheila when Perry looks at her while the sheriff is testifying. She is seen behind Burger sitting between the two spectators who were previously sitting next to each other. So how did she get there without being seen on camera?
This is the only episode where we see Della give Perry a kiss... on the cheek.
Perry solves the case while testifying on the witness stand
Trivia: We see more of Perry's apartment when Perry and Della are preparing for a party on the kitchen counter which opens towards the living room.
After Perry and Paul discover the body, Mason says "That's not the same man that came to see me at the office." But Dawson met Perry at his apartment not his office.
We see the inside of Perry's law library.
We see more of Perry's apartment when Robert Dawson comes to meet him at home and when Della gives Perry medicine for his cold.
Trivia: Della Street's phone number is Hollywood 2-1799.