When her career is threatened due to a series of undue force allegations, DI Fia Lucey is sent back to her hometown of Blackwater to investigate a missing person case.

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.

The past and present begin to merge for DI Fia Lucey.

The Blackwater Whiskey Festival has arrived. Fia takes the law into her own hands in order to get to the truth.

With Bill McGuire now firmly in her sights, Fia is struggling to find the evidence she needs to bring the case to a close.

With the murder victim's daughter missing, Fia is in a race against time.