1950s Dublin. The body of a young woman is discovered in a lock-up garage, an apparent suicide. But pathologist Dr Quirke and Detective Inspector Strafford soon suspect foul play.

The victim's sister returns from London to help the two men, but, with relations between them increasingly strained, and their investigation taking them back to events from the final days of the Second World War, can they join the pieces of a hidden puzzle before it's too late?