Performer file
Maureen Lipman
Yes — Maureen Lipman played Margaret "Mags" Dormer in Written in the Stars (Series 15, 2012).

In Midsomer Murders
Lipman plays Margaret 'Mags' Dormer in Written in the Stars, a mystery set amid an astronomical society and a village under an eclipse. The role adds a veteran stage and screen performer to the show's eccentric local circle.
Performer biography
Maureen Lipman is an actor, writer and comedian with a long career in theatre, television and film. Her screen credits include The Pianist, while her television work has ranged from sitcom and sketch comedy to Coronation Street.
She has also been a prominent performer on the British stage. Written in the Stars gives that combination of wit and dramatic assurance a distinctive Midsomer setting.
Career background ↗Maureen Lipman’s Midsomer roles
Maureen Lipman plays Margaret, usually called Mags, Dormer in Written in the Stars. The case is set around an astronomical society and a village under an eclipse. That places her among the episode’s guest community, with the character credit linked below. A search for Lipman’s Midsomer appearance is therefore best answered by both the familiar shorter name and the full character name attached to the original title.
For a rewatch, begin with the episode’s astronomy-centred premise and notice how that shared interest brings its people into contact. This is a viewing suggestion rather than an advance account of Mags’s actions or the crime’s solution. The marked case sections let you choose how much plot detail to open. Lipman’s wider theatre and screen career is covered separately above, while the episode link supplies the other cast members and real filming locations. Keeping the performer, guest role and investigation distinct makes the casting answer useful without turning recognition of a famous actor into an assumption about a character’s importance or guilt.
The cases in context
Written in the Stars
Maureen Lipman as Margaret "Mags" Dormer · Series 15, Episode 3 (2012).
A solar-eclipse gathering at an observatory is followed by deaths involving a meteorite, a spear and an astronomical disc.
DCI John Barnaby investigates with DS Ben Jones. Filming places for Written in the Stars →
Published episode credits
1 sourced episode as Margaret "Mags" Dormer.
