There are many in-jokes in "The Committee". The last names of characters Edward Dunsany, Gerald Innsmouth and Philip Arkham all refer to works by H.P. Lovecraft. The name of Harcourt Fenton is an obvious reference to Star Trek (1966) rogue Harcourt Fenton Mudd, and the names of Lieutenant Tartarus and the Avernus Club both refer to mythological hells. This is no surprise, given that prolific SF author J. Michael Straczynski wrote "The Committee".
The open garden auditorium where Jessica Fletcher (Angela Lansbury) did an afternoon reading to a roomful of attendees is the set that was used in the Korean POW camp in "The Manchurian Candidate". (1962) which Angela Lansbury co-starred.
The car runs over the side of the cliff, falls over the edge, and lands - unseen - on the ground. This is the only car crash in the entire series where the final impact is not shown.
The footage of the red Jaguar going over the cliff was used in other Universal Studios series.
Guest stars John Kopelos and Robin Thomas have also appeared in two popular Hallmark Mysteries: Thomas portrayed mystery-fiction author Graham Winslow in a series of "Mystery 101" movies, while Kopelos portrayed police captain Chauncey O'Connor in the "Crossword Mysteries" movies.