ThestoryfindsTennison,54,nowahigh-rankingDetectiveSuperintendentattheLondonMetropolitanPolice,managingthebigpictureondozensofmurderinvestigations.ButJanecan'tresisttakingahands-onroleinvestigatingthebrutaltortureandmurderofayoungBosnianrefugee.Whenherprimesuspectturnsouttobea"minor"warcriminalgivenanewlifeintheUKafteridentifyinghigherprofilewarcriminals,Tennison'squestforjusticebecomesincreasinglycomplicated.Andasthecasethreatenstobringanearlyendtohercareer,Tennisonfacesthestarkrealizationthatshehaslittleelseleftinherlife,andeverythingtofightfor.