Alan Turing was 42 years old at the time of his death. A post – mortem examination established that the cause of death was cyanide poisoning.

On Tuesday, June 8, 1954, Detective Constable Leonard Corell, entered a bedroom, in a house in Wilmslow, a quiet town in Cheshire, south of Manchester. On the narrow bed, lying on his back, was a skinny, man. He was dead. A strong smell of bitter almond was hovering over the room. Next to the bed, on the bedside table, was laying half-eaten, half an apple. DC Corell hated apples.

During his investigation, Corell becomes fascinated by Turing’s work in artificial intelligence and the intelligence services during the WWII. As he studies Turing’s life, his own life also unfolds, sad memories and feelings, lost dreams and aspirations would return to haunt him.

Alan Turing was 42 years old at the time of his death. A post – mortem examination established that the cause of death was cyanide poisoning. The apple found was not tested for cyanide, it was speculated that this was the means by which a fatal dose was consumed and this suspicion was strengthened when Turing’s fascination with the “Snow White” was revealed.

The story is an amalgam of thriller, psychology and popular science. Relationships are built around an immensely complex structure of tensions, passionate feelings and contradictions, exemplified by the secrecy, an unacknowlTringedged but pervasive melancholy, and a gloomy isolation that predominates and determines the lives of the people involved in the story.

Turing’s influence and presence is prevalent in the book. Sometimes it takes the form of respect, admiration and love, or it is used to demonstrate the ignorance, the conservatism and the mediocrity of public servants and academics who attack homosexuals to conceal their own incompetence and lack of vision.

David Lagercrantz is a Swedish journalist and the author of Larsson’s “The Millennium Trilogy” sequel “The Girl in the Spider Wed” a book long anticipated by the Scandinavian crime aficionados.