CARS: No cars. From The Cars by Greg Cockerill.

Anomaly: Mary LaRoche, listed as Lisa (as in Lisa Kudrow) Hiller, is called Liza (as in Liza Minnelli) throughout the show. [D. A. Supernaw]

The book, Legal Medicine, Pathology and Toxicology, by Gonzales, Vance, Helpern and Umberger, that is discussed in court was indeed an authorative textbook on the subject at the time. Helpern was a friend of ESG. Submitted by daveb, date unknown.

Martha Vickers (who played Carmen Sternwood in the classic Bogart film The Big Sleep, who was one of Mickey Rooney's wives, and who died much too early at age 46) makes her only Perry Mason appearance in this episode. Submitted by PaulDrake33.

About halfway into the episode Paul reports that Buzzie was with a “weird-looking chick” named Sheila Hayes who drives a 1958 300 SLR that costs $13,000. That same Mercedes in nice shape would be over $400,000 today. Posted by Eric Cooper, 23 December 2009.
+ Drake does not refer to Hayes as a “weird-looking chick” in this scene, though he does talk about the car. Submitted by gracenote, 8/19/2010.
+ In reviewing the scene at about the 26:30 mark, Drake does say Buzzie was sitting in The Purple Wall with a “weird-looking chick.” Mason then asks who she is and Drake identifies her as “Sheila Hayes.” Submitted by Kenmore, 2/6/2011
+ It might be that some of the discussion was edited out of the syndication print, which is the only version I have had access to, so far, although I no longer have that particular episode. Submitted by gracenote, 2/7/2011.
+ On the Paramount DVD, the "weird looking chick" line is at 28:10 on the VLC player. The line is also present in the Hallmark version of the syndication print. What's missing is the 60-second scene at the Purple Wall where Paul spots Buzzie with the chick. This scene runs from where Perry tells Paul "to check every restaurant, nightclub and bar..." until Paul is back in the office pouring coffee for everybody making his report. Submitted by daveb, 2/7/2011.
+ Having watched a rebroadcast of the episode, I can see the source of the confusion. At about 21 minutes into the syndication print, Paul Drake does speak of the “weird-looking chick” at the Purple Wall, but stops there. Perry asks what is the Purple Wall (see billp’s comment, below). Then a little later Perry asks Paul who Shelia Hayes is, whereupon Paul mentions the car. It was simply a case of not “rewinding” far enough. Submitted by gracenote, 4/11/2011.

Sightings: Little Old Lady in a Hat appears (hazily) in the first courtroom scene on the defendant’s side. Another recurring “guest” is a distinguished woman with long hair and a hat (a.k.a Distinguished Lady #1). Submitted by gracenote, 8/19/2010.
+ Other spectators include “Miss Carmody” and Quiet Old Man #1 (who is seen in an unusual profile view during the exit from the courtroom). And that may be Distinguished Gentleman #1’s distinctive hairline behind the closeup of Sheila Hayes. Is it? Submitted by alan_sings, 16 Oct 2010.

The man playing the coroner is one of the more prolific character actors from classic TV. Submitted by gracep, 19 August 2010.

The statuette that Sheila Hayes taps on Harry Jackson’s desk as she says “that” is of course a miniature reproduction of Auguste Rodin’s The Thinker. Submitted by gracenote, 4/11/2011.

Uncredited Actors: Don Anderson is the bailiff guarding the prisoner Green as he speaks to his attorney Perry. Later he turns up in the courtroom, and then escorts the defendant out again. Submitted by gracenote, 4/11/2011.