This book revolves around Lin Yao, a frustrated former criminal policeman in the workplace, and elites from all walks of life with different personalities, who form an "Oath Investigation Team" to accept high-stakes commissions with mysterious origins. The team successively took over ten complex and major mystery cases in cities, borders, and mountain villages: serial disappearances with death threats, carefully planned secret room murders, family tragedies caused by inheritance disputes, corporate insider exposure, biological experiment abnormalities... Each case is independent on the surface, but it vaguely reveals a series of behind-the-scenes interference and hidden clues. As the team uncovers the mystery step by step, not only their own emotions and trust are constantly being broken down, but they are also gradually getting closer to the core of the "ultimate mystery" behind Tang Zhi. The truth is revealed layer by layer, and human nature, desire and justice are pushed to the extreme in light and shadow.
