《窥探：捕食者》是由崔俊裴执导，李昇基,李熙俊,朴柱炫,景收真,安在旭,金贞兰,权华焕,金英玉,金英在,表志勋,禹志贤,李瑞准,玄奉植,金嫝勋,朴惠娜,金河彦,雪妮丝·曼宁加,朴基龙,宋富健,金东河,金洁,千贞河,姜末琴,金成景,金雨珍,安瑞妍,孙武铉,崔利善主演的剧情片。该电影于2021年在韩国上映。《Mouse: The Predator》（窥探：捕食者）将从捕食者郑在勋／郑正直(音：郑巴凛)的视角，以顺向时间轴回顾武镇连环杀人事件的始末。 制作单位表示：“以第15集为起点，将进入故事新局面，在这之前，为了让大家能理解之前事件中隐藏的叙事，因此制作了两集的番外篇”。番外篇有超过80%内容是正片没有播出的。这两集的番外篇于4月28日16:00(KST)通过网络平台TVING率先播出。
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