9 年前
视频简介
A demoted detective is given the opportunity to go undercover and take down the mob's most ruthless killer, but his life and only chance at redemption spiral out of control as he loses himself in the role.。《关键证人》（英语：Key Witness）是新加坡新传媒8频道的一部侦探电视剧，讲述的是警察、医生和杀手之间的故事。。
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