Poirot reveals that Springer was killed because she caught Shapland searching for the racquet, while Blanche was killed for her attempted blackmail in regards to the Springer murder. Through Mrs Upjohn, Poirot identifies her as a ruthless espionage agent known as "Angelica". Before Shapland is arrested, she attempts to shoot Mrs Upjohn; Bulstrode tries to shield her, but Chadwick steps in faster to shield both and is fatally wounded. Shapland is disarmed and taken away. Poirot reveals that the second murder was not Shapland's work. Although she had killed the would-be blackmailer Mlle Blanche in the same manner to make a link between the two, she had an airtight alibi for Vansittart's killing. That was done by Chadwick, who was jealous of Vansittart as Bulstrode's chosen successor. Chadwick found her in the Sports Pavilion and struck her down in a fit of madness. Before dying, Chadwick confesses to Bulstrode. In the aftermath of the investigation, Bulstrode appoints Rich as her successor, with both focusing on rebuilding Meadowbank. Meanwhile, Poirot turns over the gems to Mr Robinson to be delivered to an English woman who had secretly married Ali Yusuf when he was a student, with Julia receiving one of them as a reward.