Roland La Starza made for a convincing bouncer in this episode. He was a former boxer, a heavyweight contender who challenged Rocky Marciano twice during his career. The first fight in 1950 lead to a controversial loss. The second was in 1953 for the heavyweight title and La Starza was knocked out in the 11th round. After retiring in 1961, he parlayed his fame along with his good looks for small TV roles. Submitted by Kenmore, 5/20/2010.

Sightings: The Pencil Mustache Man can be seen in the courtroom, middle row sitting behind the defense side. Also, it appears the Quiet Old Man is sitting in the last row, defense side & two seats closer to the door than the Pencil Mustache Man. Submitted by Kenmore, 9/24/2010.
Read more about these and other regulars here. Submitted by gracenote, 6/8/2011.
+Miss Carmody is sporting a classy hat as she sits in the back row of the jury box in the first courtroom scene. Submitted by Miss Carmody, 16 July 2024.

Location: Paul checks Barbara Kramer’s car registration midway into this episode. Her address is listed as 1416 No. La Brea. This is an inside joke. That address was not only the home of Perry Mason’s production company Paisano Productions from 1961 to 1966 but also where Raymond Burr often slept during the filming of episodes. It was originally Charlie Chaplin studios but is currently home to Jim Henson Productions. Submitted by Eric Cooper, 5 October 2010.

Grandon Rhodes, who plays the trial judge here, was the judge in the first Mason episode TCOT Restless Redhead. Though he was in at the beginning and end of the series, Mr. Rhodes did not appear in any episodes in Seasons 2 or 5, and appeared only once in Seasons 3, 4 and 7. His Perry-Longevity is surpassed only by Kenneth MacDonald who appeared in all 9 seasons.
+ Ed Prentiss Judged 3 Perrys, played the "Man on Tape (Voice)"/a Dr. in 2 more & was in The FBI Story (1959) [IMDb]. Mike Bedard 3.12.15.

Exactly like Leonid Kinsky in episode 264 (see trivia note there) Stewart Moss (Dan Swanson) was one of the original cast members of Hogan's Heroes where he played a P.O.W. named Olsen. After appearing in the 1965 pilot (the only B&W episode) he decided not to continue as a regular with the series although he made a few more appearances both as Olsen and other characters. Again, like Leonid Kinsky, had he continued with Hogan he might not have been available to appear in this episode of Perry Mason. Like Moss, Arlene Martel would also make semi-regular appearances on Hogan playing Tiger, a French underground agent and also appeared as other characters. Submitted by Wiseguy70005, 6/23/12.

Stewart Moss, Oliver McGowen and Arlene Martel would all make appearances on Star Trek within the next year and a half. Submitted by Wiseguy70005, 6/23/12.
+ as Science Lt. Joe Tormolen ("The Naked Time"), the Caretaker on the "Shore Leave" planet, & Mr. Spock's Bride-to-be T'Pring ("Amok Time"), respectively [IMDb]. Mike Bedard 3.12.15
++ Also, Anthony Jochim had already appeared in the original Star Trek pilot in 1964. Parts of the episode were edited into a 1966 episode. The uncut pilot was not broadcast until 1988. Submitted by Wiseguy70005, 3/13/18.

The attractive Indus Arthur, who played Barbara Kramer in this episode, was a professional harpist. She died in 1984 at the young age of 43 from skin cancer. Submitted by mesave31, 03/13/15.

As I noted in episode #249, although there is only one episode title that refers to Perry, (for the reasons described above ) there are actually two that refer to characters Raymond Burr plays...this is the other. Clarified by Notcom, 060916.

This is the only PM appearance for Mike De Anda, who appeared in six episodes of "The Big Valley"...MikeM. 4/7/2017

If you look close you can see where the scene is stitched together when Perry and Grimes are seen together in the courtroom. Look halfway between the two characters. You can see the background is out of focus and misaligned. Submitted by Kilo 2/12/2018.

This is the final of nine credited PM appearances for Los Angeles jeweler and character actor Alex Bookston. Of Bookston's nine PM characters, only the first, "Lewis", was given a name...MikeM. 4/13/2018

This is the final of five PM appearances for Maurice Manson, who was born Moritz Levine in Toronto, Canada, in 1913. Manson worked on stage in New York before moving to Hollywood. Maurice Manson died in Los Angeles in 2002 at the age of 89...MikeM. 5/17/2018

RB does a great Cockney accent. Thankfully, it wasn't another accent from Transylvania as we've seen from foreign characters in past episodes! Kilo 11/16/2018.
+ ... as does Paul. jfh 08May2020

I can only assume that Kilo has never been to London, as that accent was the most over the top, unrealistic accent I have ever come across. I am not even sure he was trying to be a Cockney, it sounded more like something out of a Daphne Du Maurier novel set in Cornwall, such as Jamaica Inn. I am sure, by this stage the writers and the actors knew that the series had been cancelled, and they were just having as much fun as possible. Submitted by Hamilton Burger for Governor, 07/08/2020.
+ HaHa! Right you are, Guvnuh. But I do have a good friend from GB. Though he’s been in the states since the 60’s. I imagine your cringing at PM’s Cockney accent is the same reaction I have to hearing a Brit try to do a Texan accent. (I’ve been binge watching the old The Saint episodes with Roger Moore. They regularly have “Americans” in the script. Their accents are truly cringe-worthy.) Kilo 11/2/2021.

No Warning It has been suggested that the writers knew the show was cancelled so were trying to have as much fun as possible in these final episodes. The truth is that neither the writers nor the actors were informed ahead of time that the show would not continue. Raymond Burr and Gail Patrick Jackson both said that they were told there would be another season and were shocked to read in the newspaper that the show had been cancelled. In fact, Burr wanted to quit, but was talked into agreeing to a 10th season. Imagine his surprise to read in the paper that he was out of a job (and was probably homeless since he lived on the lot for awhile). Submitted by DellaMason

The $7,000,000 at stake in the patent dispute would be just shy of $60M in 2021 money. OLEF641 10/6/21