Patricia Ann Granger (born 1939) is a British crime writer who has written almost forty books in four different detective series, as well as a collection of short stories.

In 1991, Granger made the decision to switch to crime novels, saying, "Basically, there is only one plot in love stories: You can describe it in different ways, but you always come back to the subject of man and woman.

"[3] Her first crime novel, Say it with Poison, centred on the protagonists Meredith Mitchell, a consular clerk, and police officer Alan Markby.

A young police officer, Jessica Campbell, made an appearance in this novel[3] — Granger would make her the protagonist of a new series four years later.

In 2006, as Granger was winding down the Fran Varady series, she wrote A Rare Interest in Corpses, set in Victorian England in the 1860s and featuring Lizzie Martin, a companion to a wealthy widow, and Ben Ross, a police inspector.

In 2009, Granger returned to the modern world with Mud, Muck and Dead Things, a novel set in the Cotswolds and featuring Detective Inspector Jessica Campbell and Superintendent Ian Carter.

In 2021, in recognition of thirty years of crime novels, Granger released a collection of eighteen short stories, Mystery in the Making.