Detective Inspector Vera Stanhope is sent to the local prison to talk to the inmates. There she sees disgraced former police officer John Brace. He is willing to give some information to Vera in exchange for her checking in on his daughter to ensure she is managing with her young children.
Vera is directed to a place where she will find a hidden body. The body has been there for about 20 years and is one of the 'gang of four' who used to steal and sell birds eggs. Hector, Vera's father, was one of the four. As the cold case of the disappearance of the man is opened, everyone interviewed or investigated leads back to The Seagull, a club which had burned down many years ago.