Cao Mỹ Duyên, a typical 22-year-old student, helped out at her family's chicken shop and made deliveries. But on that fateful February 4th, her disappearance sent shivers down her parents' spines, leading them to call for law enforcement. Three agonizing days later, her lifeless body was discovered, revealing a sinister truth: someone had terrifying intentions. What appeared to be a straightforward murder investigation unveiled a dark underworld of illegal drug trafficking, where the most unsettling twist of all emerged— one of her own family members was entangled in this dangerous web. Prepare yourself as we delve deep into the enigmatic case of Cao Mỹ Duyên, unveiling the chilling events that led to her untimely demise and exposing the identities of all nine suspects who played a role in this gripping mystery.