Athole Stewart

A German submarine is sent to the Orkney Isles in 1917 to sink the British fleet.

A small, sedate British village is shocked when its residents begin receiving hate-filled diatribes, known as "poison pen letters."

While he's a houseguest at an upper-class gathering, wealthy Jewish man Ferdinand de Levis is robbed of £1,000 with evidence pointing towards the guilt of another guest, Captain Dancy.