Michael Innes was the pseudonym of John Innes MacKintosh (J.I.M.) Stewart (J.I.M. Stewart). He was born in Edinburgh, and educated at Edinburgh Academy and Oriel College, Oxford. He was Lecturer in English at the University of Leeds from 1930-1935, and spent the succeeding ten years as Jury Professor of English at the University of Adelaide, South Australia. He returned to the United Kingdom in 1949, to become a Lecturer at the Queen's University of Belfast. In 1949 he became a Student (Fellow) of Christ Church, Oxford, becoming a Professor by the time of his retirement in 1973. As J.I.M. Stewart he published a number of works of non-fiction, mainly critical studies of authors, including Joseph Conrad and Rudyard Kipling, as well as about twenty works of fiction and a memoir, 'Myself and Michael Innes'. As Michael Innes, he published numerous mystery novels and short story collections, most featuring the Scotland Yard detective John Appleby.