The Troubled Man

I enjoyed The Troubled Man by Henning Mankell, though was disappointed it is the last of the Kurt Wallander series.  The story has its theme in the Cold War and espionage, particularly in the 1960s.  Sweden is a neutral country however there was pressure from both sides to influence Swedish politics.  Kurt's daughter Linda in involved with an elderly couple (I won't say how here - let you find out) Hakan and Louise von Enken. Kurt meets the couple at Hakan's 75th birthday party and takes Kurt in to his confidence about concerns he had as a submarine captain in the early 1980s when he believed a particular incident involved a cover-up.  Later Hakan disappears and while "on leave" Kurt investigates his disappearance and other developments in the case.  That is as much as I can say without giving too much away. 4/5