June 1940: Foyle investigates the death of David Beale, who hanged himself while in police custody. He had been placed in custody for breach of the peace for causing a ruckus in the aftermath of having been refused conscientious objector status. Soon after, the judge presiding at Beale's hearing, Lawrence Gascoigne, has a brick thrown through his window with a threatening note attached. The case becomes a murder investigation when a member of Gascoigne's household is killed. Foyle must determine if this is as a result of Beale's death or another, as yet unknown, motive. Sgt. Milner's wife announces that she's going to visit her sister in Wales. Italy enters the war with tragic results for Foyle's friend, restaurateur Carlo Lucciano.
—garykmcd