Cha Su-yeol, a police officer who has long despised his mother, the notorious 'Mantis' serial killer, must reluctantly turn to her for help when a copycat killer emerges.
as Jeong Yi-shin
as Cha Su-yeol
as Joong-ho
as Na-hee
as Lee Jung-yeon
as Jung Hyeon Nam [I Sin's father]
as Bae Seong Gyu [Detective]
as Choi Hyeok [Detective]
as Son Ji An [Detective]
as Seo A Ra [Jung Yeon's friend]
as Seo Gu Wan
as Hong Seung Pyo [Police commissioner general]
as Kim Eun Ae
as Kim U Tae [Security]
as Park Eun Bae [Min Jae's father]
as Park Min Jae
