Struan Rodger (Dr. O'Dowd) also appeared in the movie "Four Weddings and a Funeral".
The title of the episode is a play on the title of the romantic comedy Four Weddings and a Funeral (1994). Several actors who appeared in the film make one or more appearances in Midsomer Murders, including Simon Callow (2 episodes), Rupert Vansittart (3 episodes), David Haig, Sophie Thompson, and Struan Rodger.
The last TV (or film) role for Ann Morrish to date (2019).
Shaughan Seymour plays Archdeacon Able in this episode. He returns in episode 12.4, The Glitch (2009), in the role of Norman Wayland-Smith.
Dominic Jephcott plays Henry Marwood in this episode. He previously played the role of Richard Bayly in episode 2.1, Death's Shadow (1999).