TheseriesbeginswhensuspectedhumanremainsareuncoveredonWhitneyMarsh-JessandSunnyareimmediatelycalledtothescene,abandoningtheireveningplanstoJess’shusband’schagrin.DrBalcombe’sanalysisrevealsthattheremainsarerelativelyrecentandsuggestagrimconclusion:thebodywasplacedtherealreadydismembered.Withthisinsight,JessandSunnyintensifytheirsearchcertainthatotherbodypartsmaynotbefaraway.
Astheinvestigationunfolds,viewersareintroducedtoadiversenewcastofcharacters:MelindaRicci,anoutspokentelevisioncommentatorbasedinIrelandMartin‘Marty’Baines,anautisticmanlivingwithhismotherDotinDeal,KentAsifSyed,anAfghantrainingforhisUKcitizenshiptestandJulietCooper,ahistorylecturerandfacultyheadataLondonuniversity.
Whilethesecharactersliveseeminglyseparatelives,theyareintricatelyconnectedbytheirpasts.It’suptoJess,Sunny,andtheirdedicatedteamtouncoverthesehiddenlinksandultimatelyexposethetruthbehindthecoldcasemurder.