Although this episode is presumed to take place in the "present" (early 1975), the calendar behind the desk clerk of the Dolphin Motel clearly states January 1972. Later in the episode at Maggie Larkin's place, there is a calendar on the wall showing the month of August. Although no year is clearly visible, the days also correspond to the year 1972. The company distributing this calendar is named "Brown & Bigelow." The two main characters in this episode are named Bigelow although no firm with that name is mentioned or implied. Coincidence?
Hayden Rorke also played a doctor in the 1960's sitcom "I Dream Of Jeannie".
Lt. Ives (Jack Ging), Lt. Malcolm (Ward Wood) and Lt. Tobias (Robert Reed) all appear on camera in this episode.
When Stella plays a music cassette the music starts as soon as she lowers the lid on the player. Most (if not all) cassette players need the play button to be pushed before the playing head is engaged and the motor is started to turn the reels of tape against the head.
When Joe enters Georgia's topless restaurant, the letters in the "GIRLS" sign (which the camera zooms in on) has evenly spaced letters. The 'R' appears to have tape on it to hold it up. When Joe leaves the restaurant the 'R' has slipped and is now lower and to the right of where it was before.
Although this episode was filmed for the 1973-74 season and aired in September 1973 the calendar outside Ferarro's office shows January 1972 - almost 2 years earlier.
When Mannix visits the City View Motel, Room 102, the zero of the number 102 on the door is lower than the other two numbers. A minute or so later, when the motel manager is standing in front of the same door, we see that all the numbers are now perfectly aligned.
When Mannix jumps out the window to chase Alex the gate of the fence surrounding the property is open but when the shot changes to outside the fence looking toward the house Mannix has to crash through the closed gate.
Apparently this episode took place in April 1972, two months after the episode was broadcast. The calendar in the backroom of Lou's bar is showing the month of April and the dates are consistent with the year 1972.
In this episode, Jeanne Cooper,and Robert Colbert appear. They would years later act together as regulars on the Daytime Soap Opera,"The Young and the Restless".
When Mannix meets C.W. Taggart at the end of the show, only the old man's shadow can be seen, mounted on a rocking horse.
When the librarian shows Mannix the newspaper on microfilm, she passes a couple of pages then tells Mannix "Here it is." Instead of stopping, however, she continues to scroll pass several more pages until she stops and again tells Mannix, "Here it is." Every page she has scrolled past has the exact same picture and caption at the top of the page while half of the pages have the same picture at the bottom of the page, the picture that Mannix ultimately is interested in.
When Tom the mailman brings the mail into Mannix' office he is carrying some newspapers and a tube container. When the scene changes to the interior of the office some letters magically appear between the newspapers and tube, one of which becomes the focus of the episode.
Includes an uncredited appearance by Frank Bonner as a man who is hypnotized in the nightclub scene.
In close-ups the headline of the first newspaper Peggy holds reads "The Baby Bust" while in a far shot the headline is "Freeway Collision in Heavy Fog." This shot was taken from later in the episode while Peggy holds the second newspaper.
The date on the first newspaper Peggy holds reads November 16, 1971 just 6 days after the actual airdate of this episode.
When Dennis Thomas first pulls a gun on Peggy in Mannix' office, it is extended past Peggy's coat that Thomas is holding but in the close-up that follows the gun is half-covered by the coat.
Mannix shows two photos to the bartender for identification, one of Ogilvy and one of Fielding. In both cases, when we see the bartender holding the photos they are portrait pics (longer vertically) but when we see a closeup of the photos in the bartender's hands they become landscape pics (longer horizontally).
Mannix knocks the Chief of Police's cap off during their fight at the end, but in the next scene, it is immediately back on his head where it gets knocked off again.
This was Diane Keaton's last appearance on a Prime Time TV Series.