夏洛克福尔摩斯卷入了一场涉及宿敌莫里亚蒂教授的邪恶阴谋，最终与一位母亲最近被谋杀的年轻美国土著妇女阿米莉亚罗哈斯联手。在他们合作破案的过程中，阿米莉亚也开始证明这位大侦探就是她失散多年的父亲。

TheBBCwillairReturntoParadise,anewAustralia-setspin-offfromoneoftheUK’smostwatcheddramasDeathinParadise.Filmingnextyear,thesix-partserieswillbeproducedbyBBCStudiosProductionsAustraliawithRedPlanetPicturesfortheABC,inassociationwiththeBBC.Setintheidyllic,beachsidehamletofDolphinCove,ReturntoParadiseissixgripping,twistingandfiendishlyclevermurdermysteries–allagainstthespectacularbackdropoftheAustraliancoastallandscape.Australianex-patMackenzieClarkeistheseeminglygoldengirloftheLondonMetropolitanpoliceforce–withanintuitiveapproachtodetectivework,shehasbuiltareputationforbeingabletocrackthemostimpossibleofcases.However,she’ssuddenlyforcedtoupsticksandmovebacktoherchildhoodhomeofDolphinCove,abeautiful,coastalparadise…andMackenzie’sworstnightmare.Havingescapedherhometownattheearliestopportunitysixyearsago,Mackvowedshe’dnevercomeback,leavingalotofunfinishedbusinessandunansweredquestions.Onherreturnshe’sstillnofanofthetown,andthepeopleofDolphinCovearecertainlynofansofhers.Infacteveryonewouldpreferhernottobethere,includingMackenzieherself.ButwhenamurdertakesplaceinDolphinCove,Mackcan’thelpbutputherinspireddetectivebrilliancetogooduseanddetermines,despiteherreservations,thatsheneedstomakethebestofit,includingtyingupthelooseendswiththemansheleftatthealtarsixyearsago.

Ned和Conor被迫住进了寄宿学校的同一间宿舍，一个是在橄榄球疯狂的学校里被欺负的文艺少年，一个是新到而被寄于厚望的球星队员，他们俩却悄悄地发展出一段深厚的友谊，直到引起了其他人的质疑。