Soneji contacts Cross by phone and alerts him to the fact one of Megan's sneakers is in the detective's mailbox, proving that Soneji is the kidnapper. Cross deduces that the man is obsessed with the 1932 Charles A. Lindbergh Jr. kidnapping and hopes to become as infamous as Bruno Hauptmann by committing a new "Crime of the Century", which might be explored by Cross in one of his true crime books. Megan's kidnapping proves to be only part of Soneji's real plan: to kidnap Dimitri Starodubov (Anton Yelchin), the son of the Russian president, and guarantee greater infamy for himself.