A series of serial killings is exposed and creates a stir among the public. A killer called "Darker" has been leaving a death notification card after killing scumbags who evaded the law. To counter the provocation of the mysterious killer, the police creates a special investigation team.
Year2014
Number of episodes121
Number of seasons3
Episode run time30
Status:Ended
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GenresCrimeDramaComedyMystery
Production countriesChina