March 1920: Even as British Intelligence agent Verity Kent is asked to investigate the murder of a Belgian lawyer aboard a train, her husband Sidney is trying to find out who silenced a suspect who claims to have proof of treason. Following Murder Most Fair, this sixth outing brings them together as well, as Verity and Sydney discover that their cases are closely linked, and they are up against someone who will stop at nothing to locate a gold-laden German ship that sank during the war.