Just let him go. These are the words Ky Tran will forever regret. The words she spoke when her parents called to ask if they should let her younger brother, Denny, out to celebrate his high school graduation with friends. That night, Denny is brutally murdered inside a busy restaurant in the Sydney suburb of Cabramatta, a refugee enclave facing violent crime, an indifferent police force and the worst heroin epidemic in Australian history. The police are stumped by Denny’s case. A dozen people were at Lucky 8 restaurant when Denny died, but each of the bystanders claim to have seen nothing. Desperately hoping that understanding what happened might ease her suffocating guilt, Ky sets aside her grief and determines to track down the witnesses herself.