ce ▁as ▁S eth . ▁ ▁E pisode ▁ 4 : ▁The ▁Wor sted ▁Vi per ▁Mrs . ▁Brad ley ▁and ▁George ▁make ▁a ▁trip ▁to ▁Corn wall ▁to ▁surprise ▁Ins pect or ▁Christmas , ▁who ' s ▁being ▁hon ored ▁for ▁his ▁recent ▁work . ▁When ▁a ▁local ▁girl ▁turns ▁up ▁murder ed , ▁Ad ela ▁is ▁hor r ified ▁to ▁see ▁connections ▁to ▁an ▁old ▁case ▁of ▁hers . ▁When ▁the ▁k iller ▁targets ▁someone ▁close ▁to ▁George , ▁it ' s ▁a ▁race ▁against ▁time ▁un ra vel ▁the ▁secre ts ▁of ▁the ▁wor sted ▁vi per . ▁ ▁Support ing ▁cast ▁Peter ▁Dav ison ▁as ▁Ins pect or ▁Christmas ; ▁P ook y ▁Qu es nel ▁as ▁Del il ah ▁H icks ; ▁Is la ▁Bla ir ▁as ▁My rt le ▁Qu ince y ; ▁Reb e cca ▁Call ard ▁as ▁Cec ily ▁Mo ody ; ▁Jason ▁O ' M ara ▁as ▁J ake ▁H icks ; ▁Matthew ▁Burg ess ▁as ▁Const able ▁Sh arp ; ▁Charlotte ▁Francis ▁as ▁Tem per ance ▁B aines ; ▁John ▁B owe ▁as ▁Re ver end ▁B aines ; ▁Alex ▁Pal mer ▁as ▁L ester ▁H icks ; ▁K aty ▁L own ▁as ▁Pol ly ; ▁Edd ie ▁Mars an ▁as ▁Ron ald ▁Qu ince y . ▁ ▁Broadcast ▁The ▁series ▁was ▁shown ▁in ▁the ▁United ▁States ▁by ▁P BS ▁broad c aster ▁W GB H ▁as ▁part ▁of ▁its ▁Myst ery ! ▁anth ology ▁str and , ▁and ▁introduced ▁by ▁D iana