Ruth Wilson (The Affair, Jane Eyre) stars in this drama inspired by her grandmother's memoir. Alison Wilson thinks she is happily married until her husband Alec (Iain Glen, Game of Thrones) dies, and another woman claims to be Alec’s wife. Alison is determined to prove the validity of her own marriage – but is instead led into a world of disturbing secrets. Coming to MASTERPIECE on PBS in 2019.