Following the end of series one, DI Hannah Laing and crime matriarch Dubravka Mimica are at a loss. Dubravka's son is missing, presumed dead, and Hannah's has run off overseas with a member of the Mimica crime family. But despite being on opposite sides of the law, both will stop at nothing to protect their sons.

Before We Die centres on Hannah Laing, a senior Police detective who is forced to make a terrible decision as her son, Christian goes off the rails. With their relationship seemingly beyond repair, Hannah gets a chance at redemption when Christian becomes caught up in the investigation into the brutal murder of one of Hannah's colleagues and their paths cross again in unexpected circumstances.