多年前，楊碧芯因精神分裂險些毒殺兒子葉勁峰與女兒葉朗晴。勁峰遭逢巨變解離出體弱但高智的人格朱璣，朱璣苦讀成筆跡專家，助身手不凡的勁峰執行臥底任務。雙重炸彈案、血字裸屍案促總督察江政勳集合勁峰、精神科醫生韋睿傑、拆彈警花游雁星、法醫人類學家方菀芊組成特案組緝兇，竟譜出四人五角戀！刑偵之父聶山從躁鬱症康復，奉召帶領特案組調查種種懸疑奇案，卻發現碧芯似牽涉其妻梁日思失蹤之謎……當謎圖逐塊解開，各人如何面對？
杨碧欣患精神分裂症，差点毒死儿子叶金峰。 叶金枫吓得跟一个软弱却暖心的人——朱极分离开来。 双重人格的叶金峰受到刑侦之父聂山赏识，被招募加入特案组，与精神科医生魏瑞杰、拆弹警察华友延兴、总督察蒋正勋、法医人类学家方万千、法医昆虫 专家张小满和小说编辑海澜经常被怀疑涉案，需要被调查。 精明的罪犯，破获了许多骇人听闻的悬案。
Aliases
Many years ago, because of schizophrenia, Yeung Bik-sum almost poisons her son Ip King-fung and her daughter Ip Long-ching. King-fung experiences seismic change and develops a split personality that manifests as intelligent weakling Chu Kei, a diligent student who eventually qualified as a graphologist. A double bomb case and another blood writing naked corpse case prompt CIP Kong Ching-fun to assemble a task force to pursue the perpetrators. The task force members are King-fung, psychiatrist Wai Yui-kit, bomb disposal officer Yau Ngan-sing and forensic anthropologist Fong Yuen-chin. Father of criminal investigation Nip Shan recovers from bipolar disorder. He is assigned the task of overseeing the task force investigating all kinds of bewildering cases. He finds out Bik-sum seems to be implicated in the mystery of his wife Leung Yat-sze’s disappearance. While the maze is being unraveled piece by piece, how do the chums face up to the crunch?
Aliases
