▁he ' d ▁left ▁ 2 3 ▁years ▁earlier . ▁Sommer ▁gives ▁T imo ▁a ▁DVD ▁copy ▁of ▁the ▁old ▁film ▁with ▁the ▁girl . ▁ ▁T imo ▁leaves ▁Sommer ▁again . ▁He ▁watch es ▁the ▁DVD ▁in ▁his ▁hotel ▁room ▁and ▁c ries ▁with ▁shame ▁and ▁gu ilt . ▁He ▁goes ▁to ▁see ▁Pia ' s ▁mother . ▁His ▁questions ▁about ▁Pia ▁make ▁the ▁mother ▁susp icious , ▁and ▁she ▁tells ▁ex - det ect ive ▁Mitt ich ▁about ▁him . ▁T imo ▁goes ▁to ▁the ▁police ▁station , ▁pres umably ▁to ▁conf ess , ▁and ▁Jah n ▁not ices ▁him ▁in ▁the ▁par king ▁lot ▁about ▁to ▁exit ▁his ▁car , ▁but ▁T imo ▁has ▁second ▁thoughts ▁and ▁leaves . ▁ ▁Based ▁on ▁T imo ' s ▁susp icious ▁questions ▁to ▁Pia ' s ▁mother , ▁Jah n ▁and ▁Mitt ich ▁visit ▁T imo ' s ▁house . ▁He ▁is ▁not ▁home , ▁but ▁the ▁detect ives ▁question ▁his ▁wife ▁and ▁then ▁find ▁child ▁por n ography ▁on ▁his ▁computer . ▁ ▁Jah n ▁mean while ▁has ▁got ten ▁the ▁idea ▁of ▁matching ▁the ▁list ▁of ▁red ▁cars ▁in ▁the ▁vic inity ▁of ▁Pia ' s ▁murder ▁with ▁the ▁list ▁of ▁red ▁cars ▁in ▁the ▁vic inity ▁of ▁an ▁earlier ▁murder . ▁After ▁initially ▁reject ing ▁the ▁idea , ▁Gr immer ▁adopt s ▁the ▁idea ▁and ▁sends ▁his ▁sub ordinates , ▁including ▁pre gn ant ▁J ana ▁Gl ä ser , ▁but ▁not ▁including ▁Jah n , ▁out ▁to ▁interview ▁the