Hardcastle's Frustration in Bloomington, MN

March, 1918. The Great War is grinding slowly to its bloody finale. Divisional Detective Inspector Ernest Hardcastle, head of the Whitehall Division of the Metropolitan Police, is called to a body is recovered from the Thames. Mavis Parker, the victim’s attractive widow, proves to be a good-time girl, and to complicate matters, all the suspects seem to be known to each other, including a South African who purports to be an actor. But it is when Special Branch intervene that things really get complicated . . .