
Part of Series
Chelion Piper has been arrested under suspicion of murder. One of the tenants of his country apartment house, an unsocial and secretive old lady named Miss Minnie, was found by Chelion and two other men in her bungalow, dead in her bed. Suicide or accidental death is quickly ruled out: the woman was drowned in sea water (her clothes and bed were wet), and her face was bludgeoned in. The police discover that Piper inherited the house from a relative of Miss Minnie's, and she was there to find evidence of a new will that would give her claim to the property. Motive thus provided, the police begins building the case against Chelion. The accused man writes to Dame Beatrice, and she agrees to pay a visit to Weston Pipers on his behalf (while there, she uses the alias of "Mrs. Farintosh" to allay suspicion). At the house, Dame B. meets Niobe, the quick-to-tears caretaker who was once engaged to Chelion, and the remaining tenants, all of whom are writers—true crime reporters, advice columnists, romance writers and spy novelists among them. The detective soon learns about a wave of sordid anonymous letters addressed to several individuals, as well as a prank that changed the printing of stationery bearing the estates name from "Weston Pipers" to "Nest of Vipers." The trail of Miss Minnie leads Dame Beatrice and Laura to a run-down junk shop in the village, where they find a duplicitous shop owner, a set of steel fire-irons (which may include a murder weapon), and a cryptic picture with occult origins. When the shopkeeper is found dead in his office, stabbed in the chest, an investigation of the junk shop reveals a private room containing black curtains and carpet, satanic symbols traced upon the floor, and a sacrificial altar. Dame Beatrice must now decide just how many murderers she's looking for: one, two or an entire coven.
Author

Aka Malcolm Torrie, Stephen Hockaby. Born in Cowley, Oxford, in 1901, Gladys Maude Winifred Mitchell was the daughter of market gardener James Mitchell, and his wife, Annie. She was educated at Rothschild School, Brentford and Green School, Isleworth, before attending Goldsmiths College and University College, London from 1919-1921. She taught English, history and games at St Paul's School, Brentford, from 1921-26, and at St Anne's Senior Girls School, Ealing until 1939. She earned an external diploma in European history from University College in 1926, beginning to write her novels at this point. Mitchell went on to teach at a number of other schools, including the Brentford Senior Girls School (1941-50), and the Matthew Arnold School, Staines (1953-61). She retired to Corfe Mullen, Dorset in 1961, where she lived until her death in 1983. Although primarily remembered for her mystery novels, and for her detective creation, Mrs. Bradley, who featured in 66 of her novels, Mitchell also published ten children's books under her own name, historical fiction under the pseudonym Stephen Hockaby, and more detective fiction under the pseudonym Malcolm Torrie. She also wrote a great many short stories, all of which were first published in the Evening Standard. She was awarded the Crime Writers' Association Silver Dagger Award in 1976.