20 May 1904
MA was born in Ealing
, West London.
MA's next Albert Campion thriller, Traitor's Purse
(The Sabotage Murder Mystery
in the USA
) was important in her development of her particular genre.
By August 1952
MA published perhaps her best-known novel, The Tiger in the Smoke
, with Chatto and Windus
, which had succeeded to Heinemann
as her English publisher.
30 June 1966
MA died on a stretcher on the way to a hospital X-ray department, of a complication of illnesses including metastasised breast cancer and pneumonia.