At the end of the war, Charles Hevart was in Egypt. Here he met the lovely Sophia Dehaviland. She is from the family of the wealthy industrialist Leonidis, who currently lives in England. As described in the film "The Crouching Little House," their meeting was short. For a long time, Charles and Sophia corresponded with each other. Two years later, a young man comes to Britain to marry this girl. Preparation for the wedding begins. At this point, an unexpected event occurs. The 80-year-old grandfather of Sofia is dying. Aristit Leonidis was the head of the clan and he owns all the money. The attending physician determines that he did not die by his own death. The old man had diabetes and someone slipped him a poison capsule. Many suspect a young wife of an entrepreneur who has an affair with a teacher as a tutor. Father Charles holds a high post in Scotland Yard. He asked his son to be on this estate and to follow all its inhabitants. Very soon, Haylort realized that literally everything could be involved in the murder - Lady Edith, Magda, Clemency, Roger, Philip and even his lover.