Gwendoline Butler

Gwendoline Butler, née Williams (19 August 1922 – 5 January 2013), was a British writer known for her mystery fiction and romance novels. She began her writing career in 1956 and also wrote under the pseudonym Jennie Melville. Credited with inventing the "woman's police procedural," Butler gained recognition for her works, especially the Inspector John Coffin series penned under her own name, and the Charmian Daniels series published under the Jennie Melville pseudonym. Provided by Wikipedia