The car registration plates are frequently not accurate. The Garda (Irish Police) cars have Northern Irish reg plates, which is incorrect, as the Garda is the police force in the Republic of Ireland. And some of the car registrations are just made up, to look similar to proper Republic of Ireland registration plates, but the letters used in the middle of the registration are all wrong.
The producer, when asked by the network execs to kill off one of the characters of her show, brags that when she writes the script "it will be the biggest thing since Who Killed JR," obviously refering to the big storyline on Dallas. But that plotline was called Who SHOT JR. Larry Hagman's character didn't die.
Vivian Wu in this episode plays a woman from a traditonal Japanese family but she was born in Shanghai, China.
Jessica states that as of the airing of this episode, she has published 23 novels.
Grady shows Jessica a picture of his son Frankie, now five years old. Grady has not been seen since his appearance in The Szechuan Dragon, at which point his wife, Donna, was almost full-term with their first child.
This episode is one of the few occasions where Jessica herself is tripped up. She uses the excuse of missing reading glasses to cover for a friend searching a man's office, but pulls the glasses out a few moments later to read something, which Jim Harris comments on, catching Jessica in the very mistake she uses to catch many of the killers.
As Danny Kincaid prepared to take a swim he was shown to have quite pale skin and was wearing green shorts. However the shots of him swimming in sea showed him with darker, tanned skin and light blue and black shorts.
Twenty years earlier, Mort had been romantically involved with Joanna and they had been planning a romantic cruise together when she left him for Don Sims.
Seth's birthday is stated to be 'on the 21st'. The month is not given.
Jessica gives her New York address as 'West 60th Street'.
The play in London is based off another of Jessica's books, Murder In White.
Jessica's newest novel, The Uncaught, covers the murder of a cheating wife by her cheating husband, disgused to look like a break-in.
Jessica's New York address, as given to Dave Novaro, is 941 West 60th Apartment 4-B.
The telephone number given for Konig Roofing and shown on the side of the truck is (212) 555-1241, following the long-running Hollywood pattern of numbers having '555' in them. Daffy Dave's work number follows the same pattern (250) 555-4410.
Although it is strongly implied that Ethan was a deputy in Cabot Cove for some time, this is the only episode in which he was ever seen or mentioned.
Nitpick: The jockey Wally hires to replace Jill is extrememly tall for a jockey. He is much taller than both the stable hand and Catherine. He is quite tall compared to the horse as well.
Matt mentions that one of the horses Jessica sees at the training stable is a yearling just broken in, then they watch one of the riders try to mount the horse. Horses are never ridden until they are about two years old. A yearling is a one year old horse.
Nitpick: Paul rips up Catherine's loan application in front of Lloyd, but then he just leaves it on the desk. He should have either shredded it, locked it up or taken it with him.
When Matt calls Catherine and Wally from the track after Swift Prince's training session, they are having drinks. However, race horses generally train in the morning, so it's unlikely the owners would be having drinks at that time of day.
In her interview with Ben, Jessica tells him that she started writing mysteries 14 years earlier while she was still teaching English, having been inspired by a murder in Bar Harbor.