Episode 1
Detective Colette Cunningham takes a call from Dublin, where she has been named next of kin to her murdered daughter Kate, who vanished 20 years prior.
Episode 2
Surprised by her latest find, Colette travels to the hospital where Stacey worked to speak with those who knew her, in the hopes of understanding her daughter.
Episode 3
After a visit from organised crime, Collette is more suspicious than ever about Stacey's supposed suicide and pieces together clues that point to a culprit.
Episode 4
After a tense confrontation, Colette becomes convinced that Stacey was murdered, but she still needs evidence to prove it her suspicions.
Episode 5
Colette follows up on a case that leads her into contact with someone who knew Stacey, which results in a new lead - Stacey's last call.
Episode 6
With a suspect in her sights, Colette closes in on the truth; with Patrick and Siobhán's help, Colette finally discovers corroborating evidence.