Chaos at the Police Station!

[Solving cases + deduction + an eye for insight + no System + one heroine] Lin Lang! In his previous life, he devoted his entire career to fighting drug crime. Even when his parents passed away, he couldn’t go home to see them one last time because he had to complete his undercover mission. After ten years undercover, just as the final operation was about to begin, he was betrayed and died horribly at the hands of drug dealers! Reborn, Lin Lang immediately joins the criminal investigation unit. He’s going to round up every last one of the people who betrayed him!