With the case confirmed as a murder, Fia suspects her new partner is involved in Roisin Hurley's death, and after a confession from Cian, she cautiously accepts his help.
Da sagen ikke betragtes som en forsvinden, men som et bekræftet mord, mistænker Fia sin nye partner, Furlong. Men der går ikke lang tid, før hun opdager, at der er flere mørke hemmeligheder i Blackwater.