John Rebus stands accused of a crime that could put him behind bars for the rest of his life. Following A Song for the Dark Times, this 24th outing finds Detective Inspector Siobhan Clarke tasked with finding an infamous cop who has gone missing. Finding him will expose not only her superiors, but her mentor John Rebus. And Rebus himself may not have her own interests at heart, as the repayment of a past debt places him in the crosshairs of both crime lords and his police brethren.