Mungo Lockhart goes up to Oxford and find himself sharing a room with the Honourable Ian Cardower, who is heir to a rich title and estate. Unimpressed by rank or riches, Mungo is nonetheless wary in his exchanges with Cardower, and this is reciprocated. However, the two do become good friends and Cardower takes Mungo on visits to his parents' home, to visit the head of the family, Lord Audlearn at Bamberton Court - a stately home in the grand style - and then to Mallachie, the true family seat, where the eldest son Lord Brightmony lives in splendid isolation, save for his companion; Leonard Sedley, sometime novelist. All seems well, except for Mungo noticing the interest shown by the family in a young Scots boy of uncertain parentage. The story takes on an obvious twist with the usual suspicions and uncertainties mounting, lawyers being called in, and general acrimony, but the final crisis and confrontation is of a surprising nature and an unusual explanation unfolds. On the way, Stewart of course introduces sub-plots and high comedy in his usual literary style. The novel is thought provoking, teasing, and thoroughly entertaining and fascinatingly descriptive of the various locations; Oxford, Perugia in Italy, and Scotland
Full name: John Innes MacKintosh Stewart Published mysteries under the pen name of Michael Innes. Stewart was the son of Elizabeth Jane (née Clark) and John Stewart of Nairn. His father was a lawyer and director of Education in the city of Edinburgh. Stewart attended Edinburgh Academy, where Robert Louis Stevenson had been a pupil for a short time, and later studied English literature at Oriel College, Oxford. In 1929 he went to Vienna to study psychoanalysis. He was lecturer in English at the University of Leeds from 1930 to 1935, and then became Jury Professor of English in the University of Adelaide, South Australia.
He returned to the United Kingdom to become Lecturer in English at the Queen's University of Belfast from 1946 to 1948. In 1949 he became a Student of Christ Church, Oxford. By the time of his retirement in 1973, he was a professor of the university.
Using the pseudonym Michael Innes, he wrote about forty crime novels between 1936 and 1986. Innes's detective novels are playfully highbrow, rich in allusions to English literature and to Renaissance art. Sinuous, flexible and effortlessly elegant, Stewart's prose is refreshingly free of all influence by Strunk & White. The somewhat ponderous writing style and analysis of character, particularly in the early novels, is frequently Henry Jamesian. The best-known of Innes's detective creations is Sir John Appleby (originally Inspector John Appleby) of Scotland Yard, who is a feature of multiple books. Other novels also feature the amateur but nonetheless effective sleuth, painter and Royal Academician, Charles Honeybath. The two detectives meet in "Appleby and Honeybath." Some of the later stories feature Appleby's son Bobby as sleuth.
Stewart also wrote studies of Rudyard Kipling, Joseph Conrad, and Thomas Hardy. His last publication was his autobiography Myself and Michael Innes (1987).
In 2007, his estate transferred all of Stewart's copyrights and other legal rights to Owatonna Media.