A seemingly disparate series of events converges at a seaside estate, culminating in a calculated murder that challenges the investigative prowess of Superintendent Battle. The protagonist must navigate a complex web of social interactions and hidden motives among the guests at Gull’s Point to identify a killer who has meticulously orchestrated their crime. As the narrative unfolds, the tension rises through a series of psychological confrontations and the slow revelation of past secrets. The story employs a classic third-person perspective, focusing on the interplay between the suspects and the methodical deduction required to uncover the truth.

This novel is widely regarded as one of the most structurally innovative works in the author's bibliography. Critics often highlight the unconventional approach to the murder plot, which emphasizes the psychological preparation leading up to the crime rather than just the investigation itself. Readers frequently note the cleverness of the narrative construction, which successfully masks the killer's identity until the final reveal. The work remains a staple for those interested in the evolution of the detective genre and the mastery of suspenseful plotting.