A visit to her local prison brings DI Vera Stanhope face to face with an old enemy: former detective superintendent, and now inmate, John Brace. Brace was convicted of corruption and involvement in the death of a gamekeeper, and Vera played a key part in his downfall. Now, Brace promises Vera information about the disappearance of Robbie Marshall, a notorious wheeler-dealer who disappeared in the mid-nineties, if she will look out for his daughter and grandchildren. He tells her that Marshall is dead, and that his body is buried close to St Mary's Island in Whitley Bay. However, when a search team investigates, officers find not one skeleton, but two. This cold case takes Vera back in time, and very close to home, as Brace and Marshall, along with a mysterious stranger known only as 'the Prof', were close friends of Hector, her father.

An encounter with an old enemy draws Vera into a cold case investigation with ties to her father.