Uncredited Actors: Don Anderson appears in one of his most familiar roles, a non-speaking uniformed policeman. As usual, we do not hear his reply. Submitted by FredK, 16 Nov 2010.
+ Don also appears in court in the back row behind Perry. Submitted by BigBill767, 6/17/2016.

Sightings: Three regulars make an appearance in the courtroom gallery: a pensive Pencil Mustache Man, a passive Quiet Old Man (#1), and an inscrutable Little Old Lady in a Hat. Read more about these recurring spectators. Submitted by gracenote, 4/17/2010.
+ Hallelujah! We finally see African-Americans in the courtroom gallery!!! And more than one!Welshwoman 01/15/15.
++ African American Man, African-American Woman, and the two of them together, as African-American Couple (plus African-American Woman #2, not a regular) have been appearing as courtroom spectators at least since Episode 143, according to my tracking. Sumbitted by catyron, May 19th, 2018

Although credited, Lt. Tragg (Ray Collins) does not appear. Submitted by gracenote, 4/17/2010.

Meg Wyllie appeared in 4 Perrys: 2 with the same surname, Mrs. Margaret STONE, "Stand-In Sister" & Ninevah STONE, "Nebulous Nephew" [IMDb]. Mike Bedard 3.16.15.

Although Jesse Hibbs did not come on board to PM until late in the 1961-62 season, he more than anyone established the no-nonsense, no-frills directorial style with which we are familiar with the show, directing over 40 episodes over the last 4 years and being given the honor of directing the final episode, TCOT Final Fade-Out. cgraul 11.23.11

Marguerite's beaut-of-a-1959 Ford four-door hardtop is a Galaxie Town Victoria (Model 75A, $2654 base price new). 1959 was the first year Ford used the Galaxie model name. It denoted DeLuxe features including extensive chrome and stainless steel trim. Keys to the ID of Marguerite's car are the distinctive '59 grill and rear-end styling. The full chrome, including the "<" cut at the rear of the side windows ID it as a Galaxie (passenger side shown here(this link is broken)). In keeping with Ford's frequent practice of using model names with allusions to British royalty (eg, "Tudor"), Marguerite's model was sometimes referred to as a Fordor Hardtop. For the '59 model year the Fairlane and Galaxie models were essentially the same car except for the trim features and nameplates; their designs (size) diverged for '62 model-year. Added by Gary Woloski, 1/27/12.

The Curious Coffee Set: A cup from The Curious Coffee Set appears at Ms. Keith's Manzana House. jfh 09Feb2017.

It appears as though the coffee cup Paul hands Hilary Gray is empty. Submitted by Otto Gervaert, 3/25/21.

When Perry visits Adam and his girlfriend in Adam's apartment, what is that strange creature sitting on a shelf behind him??? Looks like some sort of weird alien dummy. Welshwoman 01/15/15

Allen Case makes his third and final appearance in the series here and, as with several other actors, seemed to be professionally typecast by the Mason production team. Back in episode 173, TCOT Golden Oranges he played home designer Frank Wheeler, who has a bullying boss played by Arch Johnson. This time he's a surveyor with Bert Freed as his boss. Submitted by FredK 12 December 2012.

Cold case / old case: Perry also solved the murder of Mrs. Davis - killed three years earlier. Submitted by H. Mason 9/27/14

Grammar Errors: 1. When Ms. Keith is showing the Manzana House to Hilary and Adam she points out a certain bas-relief wall hanging, mispronouncing it as "bah-relief"; 2. At about 12 minites in, Ed Pierce says to Joe Marshall that Joe had inferred something by statements Joe had made, but the proper word is implied.
+ Actually, "bah- relief" is the correct pronunciation. [unsigned]
++ I remember thinking she has said it wrong. I can't remember how she said it, but maybe it was 'a' as in 'bat' rather than 'father'. (she did not say the 's' sound, if I recall). I don't know which 'ah' pronunciation the original commenter meant. --yelocab 26JUL18
+++ She says bah like father. Merriam-Webster has three pronunciations, including ˌbä and bās. Kilo 7/7/2019.

Grant Williams: The actor played the part of Robert Scott Carey, the title character in the 1957 movie The Incredible Shrinking Man. He also played the part of Greg MacKenzie on the ABC show Hawaiian Eye. Submitted by H. Mason 4/18/15

Murder Weapon: In this story it was revealed for the third time that a person was killed with a crowbar (#117 and 202 [first victim]). Submitted by H. Mason 4/18/15

This is the only PM appearance for Joan Blackman, who was married 1968-1970 to Rockne Tarkington, the only African-American to have a credited speaking role on "The Andy Griffith Show"...MikeM. 2/9/2017
+ Ms Blackman was also married to fellow Perry singleton Joby Baker (TCOT Bogus Books). jfh 09Feb2017.

Ruinous Road or Ruinous Redhead? My Frontier FIOS screen menu shows this episode as "The Case of the Ruinous Redhead". A number of websites also show "Ruinous Redhead" in the title. MeTV has "Ruinous Road" on their website. Wikipedia shows "Ruinous Road". The opening clearly shows "TCOT Ruinous Road"...MikeM. 2/9/2017
+ Frontier FIOS is still showing "Ruinous Redhead" on its menu for tonight's MeTV Perry Mason airing. That incorrect title mixes episode 1 (Restless Redhead) and this episode (Ruinous Road)...MikeM. 6/21/2018
++ MeTV is once again showing the Ruinous Redhead (sic) tonight. I wonder if it would be worth the effort to drop them a note and point out that the title they are using and the actual title at the head of the episode don't match? OLEF641 8/6/21

Unmarked Bills: Lt. Anderson tells Perry that he found an envelope with $10,000 in "small, unmarked bills". He says unmarked bills like it's some kind of meaningful clue. Marked bills are marked by police as a way to trace the money. If the envelope had contained marked bills, now that would be a tell-tale clue! Kilo 7/7/2019.

Was that a Bic pen Quincy Davis used as a map pointer with Paul Drake? Submitted by Otto Gervaert, 3/25/21.
+ When Davis shows Paul on the map where the Manzana Estate and "Osmand's new tract" are, the north-south through road is Roscoemare road, which the "highway" was going to be tied to with the access road. Just west of Roscoemare, the plain road with no side streets, is Sepulveda Blvd. through the Sepulveda Pass. The I-405 freeway had been completed through that pass two years before the episode aired. They obviously were using an old map. OLEF641 8/7/21

The IMDb entry for Patricia Joyce (as "Secretary") lists her birthdate as 22Nov1949, which would put her age as 15 in the episode. That can't be correct. jfh 14Nov2024