Wednesdays is `treat' day for Margaret, when her mother allows her to go on an outing with the maid, Lydia. Ellie, Margaret's mother, has just had another baby and she knows that Margaret, now eight, needs to feel loved. There are several things wrong with this scenario and, gradually, Gardam lets us discover what they are. Lydia, for instance is a magnet for young men, blowsy, large and blonde. Margaret's parents are members of the Primal Saints, a small Christian sect who do not allow pictures, music or dancing and there must be no alcohol or smoking in their houses. Margaret's father is a bank clerk and leader of the sect. Lydia has been sent (by distant Saints in Bishop Aukland, recommended as "a good girl from a devout family, strong in the faith and a good scrubber."). Lydia is not averse to work, but she is far from the paragon promised. Mrs Marsh is disconcerted: "We thought - you see, we thought -," she said. "Didn't you know? Mr Marsh, and I of course, and the children - we are The Faithful."
"Think nothing of it," said Lydia, "Where d'you keep yer butter?"
Astonishingly for Ellie Marsh, her husband will not hear of Lydia being sent away, "She has been sent," said Marsh. "We are to work His will."
The novel as a whole is a delight. Lydia wreaks havoc, Margaret learns that her mother is fallible and that the world is a much larger place than she thought. Ellie Marsh has a past more interesting than her present, with connections to an aristocratic family living nearby - whose matriarch has disinherited her children after ruining most of their lives and turning their stately pile into a refuge for so-called lunatics. These elements of the story are gradually brought together to provide a brilliant and exhilarating comedy of manners.
Shortlisted for the Booker in 1978, this novel is funny, sometimes provoking and profound.