Catherine Aird is the pseudonym of English novelist Kinn Hamilton McIntosh MBE. She is the author of more than twenty crime fiction novels and several collections of short stories. Her witty, literate, and deftly plotted novels straddle the "cozy" and "police procedural" genres and are somewhat similar in flavour to those of Martha Grimes, Caroline Graham, M C Beaton, Margaret Yorke, and Pauline Bell. She is a recipient of the Cartier Diamond Dagger award.
Aird was born in Huddersfield, Yorkshire in England. She attended the Waverley School and Greenhead High School, both in Huddersfield. As a young adult, she was bedridden due to a serious illness. Upon recovery, she worked as practice manager and dispenser for her father's medical practice in Sturry, near Canterbury, Kent. Her first novel, The Religious Body, was published in 1966.