1 5 ▁South ▁Korean ▁slash er - th r iller ▁film ▁directed ▁by ▁Hong ▁W on - chan ▁and ▁st arring ▁Go ▁Ah - s ung ▁and ▁Park ▁S ung - wo ong . ▁It ▁is ▁about ▁a ▁detect ive ▁trying ▁to ▁figure ▁out ▁why ▁a ▁m ild - mann ered ▁man ▁has ▁killed ▁his ▁family ▁and ▁is ▁target ing ▁his ▁co - work ers . ▁The ▁film ▁premier ed ▁at ▁the ▁Mid night ▁Screen ings ▁section ▁of ▁the ▁ 2 0 1 5 ▁C annes ▁Film ▁Festival . ▁ ▁Plot ▁Kim ▁By ong - go ok ▁works ▁as ▁section ▁chief ▁in ▁big ▁b ureau - building . ▁He ▁is ▁believed ▁to ▁be ▁a ▁family ▁man , ▁but ▁his ▁colle agues ▁don ' t ▁like ▁him ▁much . ▁One ▁day , ▁By ong - go ok ▁sla ugh ters ▁his ▁whole ▁family ▁and ▁then ▁disapp ears . ▁Det ect ive ▁J ong - ho on ▁is ▁investig ating ▁the ▁case ▁and ▁also ▁asking ▁Kim ' s ▁colle agues ▁about ▁possible ▁cl ues , ▁but ▁it ▁seems ▁they ▁can ' t ▁help ▁him . ▁Ex cept ▁Lee ▁Mi - ra e . ▁The ▁polic eman ▁recogn izes ▁that ▁the ▁young ▁girl ▁seems ▁to ▁know ▁more ▁about ▁his ▁suspect , ▁but ▁is ▁hiding ▁something ▁from ▁him . ▁So ▁Det ect ive ▁J ong - ho on ▁is ▁watching ▁the ▁C CT V - T apes ▁and ▁see ▁By ong - go ok ▁entering ▁the ▁building ▁- ▁but ▁doesn ' t ▁come ▁out ▁again . ▁J