A police detective is drawn into intrigue while investigating a mathematical genius's murder.
When Simon Bowles commits suicide, no one is surprised. A graduate student in mathematics at Cambridge University, Bowles had a long, well-documented history of depression. But as Detective Sergeant Derek Smailes soon discovers, he also had a passion for investigating historical mysteries and an extraordinary knack for solving them. His most recent project: uncovering the identity of the fabled fifth man in the notorious Cambridge spy ring of the 1930s. Smailes can't help wondering whether Bowles could have possibly solved that mystery-and if so, whether his theorem could have brought about his death...
