ars m ith , ▁and ▁directed ▁by ▁Gu ille m ▁Mor ales . ▁The ▁episode ▁tells ▁the ▁story ▁of ▁Christ ine , ▁a ▁young ▁woman ▁living ▁in ▁a ▁small ▁flat , ▁over ▁ 1 2 ▁years ▁in ▁her ▁life , ▁foc uss ing ▁on ▁key ▁days ▁and ▁life ▁events ▁in ▁that ▁time . ▁Christ ine ▁is ▁played ▁by ▁Sher idan ▁Smith , ▁while ▁those ▁who ▁play ▁an ▁important ▁part ▁in ▁her ▁life ▁are ▁played ▁various ly ▁by ▁Tom ▁R iley , ▁St acy ▁Li u , ▁M iche le ▁D ot rice , ▁Paul ▁C ople y , ▁P ember ton , ▁Jess ica ▁Ell er by , ▁Jo el ▁Little ▁and ▁D ex ter ▁Little . ▁She ars m ith ▁plays ▁the ▁Str anger , ▁an ▁unknown ▁figure ▁apparently ▁ha un ting ▁Christ ine . ▁ ▁" The ▁ 1 2 ▁Days ▁of ▁Christ ine " ▁depart ed ▁from ▁the ▁usual ▁black ▁comedy ▁of ▁Inside ▁No . ▁ 9 ▁to ▁instead ▁focus ▁on ▁drama . ▁The ▁story ▁was ▁interpreted ▁in ▁a ▁number ▁of ▁different ▁ways ▁by ▁comment ators , ▁who ▁differ ed ▁in ▁their ▁understanding ▁of ▁Christ ine ' s ▁life ▁and ▁confused ▁perspective , ▁and ▁the ▁identity ▁of ▁the ▁Str anger . ▁Review ers ▁respond ed ▁extremely ▁posit ively ▁to ▁the ▁episode , ▁which ▁was ▁awarded ▁five ▁out ▁of ▁five ▁stars ▁in ▁both ▁The ▁Times ▁and ▁The ▁Te legraph . ▁Crit ics ▁various ly ▁comm ended ▁the ▁performances ▁of ▁the ▁actors , ▁particularly ▁Smith , ▁the ▁po ign ancy ▁of ▁the