Historic Hall Barn - Buckinghamshire, England - was the filming location for the Talbot mansion.
When visiting local crackpot Dudley Carew, Troy picks up and examines a magazine entitled "The Conspiracy Gazette", featuring a cover story "The Truth About Crop Circles" with a crop circle photo on the cover. This magazine from Carew's desk looks strikingly similar to a magazine seen on the desk of Lloyd Kirby, a UFO True Believer in "The Electric Vendetta" which centered around crop circles.
Victoria Shalet plays Julia Carter in this episode. She returns in episode 12.2, The Black Book (2009), in the role of Melony.
The final episode to have closing titles stating Bentley Productions - A Chrysalis TV Group company in association with A & E Television Networks
Janet Maw plays Sylvia Woodard in this episode. She returns in episode 6.5, Birds of Prey (2003), in the role of Eileen Hamilton.