The climax itself is the gradual unraveling of the intricate plot woven throughout the novel. Poirot meticulously presents the evidence he has gathered, pointing out red herrings and false trails that lead away from the true culprit. As Poirot narrows down the possibilities, tension builds until he finally reveals the identity of the murderer.
This climactic moment is marked by a sense of surprise, as the readers may have formed their own theories and conclusions only to have them overturned by Poirot's deductions. The climax thus serves as a resolution to the mystery, bringing together all the threads of the narrative and providing a satisfying conclusion to the story.