Starring: Terrence Hardiman, Frances Amey, Gunnar Cauthery, Thomas Szekeres
Episode #2.1 - S2-E1
Continuity mistake: Near the end of the episode, when Simon is showing the photographs to Lloyd, Dinah and Harvey, the photographs on the table move around from shot to shot. (00:21:29)
Episode #2.2 - S2-E2
Continuity mistake: At the end of the previous episode Lloyd opens the front door to the house and Rose turns around to reveal herself. At the beginning of this episode we see this same moment again, however Rose is facing forward the whole time. (00:01:07)
Episode #1.1 - S1-E1
Visible crew/equipment: When Lloyd and Harvey are studying in the library (just before Harvey says "what do you think they're doing?") the boom microphone drops down into the frame above Lloyd's head. (00:14:17)
Trivia: The show is adapted from four of Gillian Cross' "Demon Headmaster" novels. The first half of the first series is adapted from "The Demon Headmaster", the second half is adapted from "The Prime Minister's Brain", the second series is adapted from "The Demon Headmaster Strikes Again" and the third series is adapted from "The Demon Headmaster Takes Over."