PM
Patricia Moyes
Patricia Pakenham-Walsh, also known as Patricia Moyes was a British mystery writer. Her mystery novels feature C.I.D. Inspector Henry Tibbett. One of them, Who Saw Her Die was nominated for an Edgar Allan Poe Award in 1971. Moyes was inducted into the Detection Club in 1971. In addition to the Tibbett mysteries, she also wrote several juveniles and short stories.
Excerpt from Wikipedia, available under CC BY-SA 4.0.
Books

Murder fantastical
1988
ISBN 9780862207229
Johnny Under Ground
1983
ISBN 9780440142119