SarahLancashirereturnsintheacclaimedBBCthrillerwrittenbySallyWainwright.No-nonsensepolicesergeantCatherineCawoodisbackheadingupherteamofdedicatedpoliceofficersintheCalderValleyinWestYorkshire.Whileonduty,shemakesagruesomediscovery–abody.Thevictim’sinjuriesbearastrikingsimilaritytoastringofothermurdersoverthepreviousfewmonths,suggestingaserialkillerisontheloose.ButthecasebecomesevenmoreshockingwhenitemergesthatCatherineknowsthevictim–somethingthatcouldhaveseriousrepercussionsforbothherselfandherfamily.