MacDiarmid's study of the eccentric, impulsive Scottish genius is of his most important prose works, and takes its place as Volume IV of the MacDiarmid 2000 edition launched in 1992 to celebrate the centenary of his birth.

Mary Guthrie, a student of English at Edinburgh University becomes fascinated by the fantastical 17th century writer, Sir Thomas Urquhart of Cromarty and sets out to write a thesis on him. She pursues her research in his ancestral home, Cromarty House, now a crumbling ruin. There under the current laird, Sir James she is drawn into an increasingly Gothic exploration of the history of the eccentric Urquharts and the maze of tunnels beneath the House. The Catholic priest of her parish, Ebenezer Krook, to whom she loses her virginity, is a distant and illegitimate descendant of Urquhart. He renounces his calling and goes to Edinburgh, where he is taken on by an idiosyncratic bookseller. Subconsciously he is searching for his father, who disappeared in the Spanish Civil War, leaving him with little more than a book and the memory of a boat trip to the Corryvreckan whirlpool, which allows for a cameo appearance by George Orwell. The novel captures the charm and atmosphere of Edinburgh and rural Scotland. Like Jean-Pierre Ohl's first novel, Mr Dick or The Tenth Book, this book will appeal to readers who like clever and unusual mysteries, where past and present, fact and fiction are ingeniously merged together.

The Clan Chisholm is said to descend to have Norman origins and to have come from the borders of Scotland. However, for over six hundred years the clan has been associated with the highlands of Scotland, particularly Inverness, Sutherland, Ross and Caithness.