The story is told from four points of view, which generally flow from each other with limited scene repetition. In order, the four narrators are Robert Holt, Sydney Atherton, Marjorie Lindon, and Augustus Champnell. The story is written down as elaborate testimonies gathered by Champnell, who is a detective and who, despite only appearing during his own narration, provides the context of the antagonists'' motives and the wrap-up of how the rest of the cast fared after the adventure. The events described are insinuated to be based on fact and several names used in the novel are supposedly altered to protect the identities of those involved. The year is not given, or rather left ambiguous at 18-, but everything takes place over a three-day period around 2 June on a Friday.