▁back ▁the ▁boy ▁he ▁killed , ▁making ▁Clara ▁promise ▁to ▁return ▁him ▁to ▁his ▁family . ▁ ▁D anny ▁next ▁appears ▁in ▁the ▁ 2 0 1 4 ▁Christmas ▁special , ▁" Last ▁Christmas ". ▁ ▁Having ▁been ▁put ▁in ▁a ▁dream ▁state , ▁Clara ▁is ▁reun ited ▁with ▁D anny ▁for ▁an ▁id yl lic ▁Christmas ▁Day . ▁The ▁Doctor ▁enters ▁the ▁dream ▁to ▁conv ince ▁Clara ▁to ▁w ake ▁up ▁before ▁the ▁creature ▁that ▁induced ▁the ▁dream ▁k ills ▁her , ▁but ▁she ▁ref uses , ▁unw illing ▁to ▁let ▁go ▁of ▁D anny . ▁ ▁" D anny " ▁then ▁reve als ▁that ▁he ▁is ▁aware ▁of ▁his ▁' re ality ' ▁as ▁a ▁dream . ▁ ▁He ▁tells ▁Clara ▁that , ▁while ▁she ▁can ▁still ▁miss ▁him , ▁she ▁must ▁move ▁on ▁and ▁encourag es ▁her ▁to ▁live ▁her ▁life ▁without ▁him . ▁ ▁Finally ▁accepting ▁his ▁death , ▁Clara ▁agre es ▁to ▁w ake ▁up ▁from ▁the ▁dream . ▁ ▁D anny ▁is ▁occasionally ▁mentioned ▁in ▁the ▁nin th ▁series . ▁In ▁" The ▁Mag ician ' s ▁App rent ice ", ▁Miss y ▁asks ▁Clara ▁about ▁her ▁dead ▁lo ver , ▁referring ▁to ▁D anny . ▁When ▁Clara ▁real ises ▁she ▁is ▁about ▁to ▁die ▁in ▁" Face ▁the ▁R aven ", ▁she ▁states ▁that ▁if ▁D anny ▁P ink ▁could ▁face ▁his ▁own ▁death , ▁then ▁so ▁can ▁she . ▁ ▁Cast ing ▁and ▁development ▁On ▁ 2 4 ▁February ▁ 2 0 1 4 ,