On a rainy night, an unknown man's body was discovered in an abandoned factory. A fruit knife with only the deceased's fingerprints stuck in his chest. The anonymous reporter was vague, leaving only a cufflink with an "L" engraved on it and an abandoned backpack. Inside the bag was a woman's long hair that did not belong to the deceased.
Criminal investigation captain Chen Feng followed the lead and identified Liu Jian, a suspect with a history of theft, whose DNA happened to appear in the nail gaps of the deceased. However, Liu Jian disappeared mysteriously, leaving only clues about his debt dispute with the deceased.
As the investigation deepens, the elegant female doctor Lin Wei, the anonymous reporter Wang Lei, the pharmacy clerk, and the deceased's brother Zhao Qiang are successively involved in the case. Everyone lies and everyone seems to be hiding secrets. A suspicious transfer of 50,000 yuan, a missing medical bracelet, an unpopular women's perfume... The clues are intertwined into a huge web.
When Liu Jian was finally arrested and revealed the shocking truth, Chen Feng discovered that this was just the tip of the iceberg. Carefully planned murder with a borrowed knife, layers of identity disguises, crazy obsession for revenge... Who is the real suspect hiding behind the scenes and manipulating everything?
