Searching for his missing god-daughter, Lydia, taking care of her son and investigating a series of sabotage cases are enough to keep Foyle very busy. To add to the pressure, his boss wants him to work on stamping out illegal gaming along the south coast. But when a local gambler is found murdered near a military research center -- the target of some internationally funded saboteurs -- sabotage and gambling come together and Foyle must enter the top-secret arena of weapons research in pursuit of the truth.