The ground-breaking novel upon which this crime film was based was among the first mystery thrillers to reveal the killer's identity at the outset, an adulterous doctor (Hywel Bennett) slowly poisoning his wife (Judy Parfitt) to death. The settings meticulously replicate the period during which Francis Iles wrote the novel--1931--and the performances make this twisting O. Henry-style story a true English gem.
