At Oxford, Russell reads chemistry and theology, immersing herself in the Bodleian Library and participating on the side in the dramatic society and elaborate pranks. Between terms, Russell solves her first cases as Holmes's apprentice, catching a German spy disguised as a neighbor's butler and apprehending a thief who had burgled the local pub. In August 1918, Holmes is consulted on the kidnapping of Jessica Simpson, the American senator's daughter, and brings Russell, elevating her apprenticeship. The pair journey in disguise as gypsies and trace the missing girl into Wales, where Russell takes initiative in rescuing Jessica, who develops a bond with her. However, Jessica's kidnappers are merely hired hands, and they fail to find the mastermind behind the plot. Russell and Holmes emerge from the case with a stronger sense of partnership, having solidified their mutual trust of each other's instincts.