Follows the Garvey sisters, who are bound together by the death of their parents and a promise to always protect each other.
Cast: Anne-Marie Duff, Claes Bang, Eva Birthistle, Sarah Greene, Eve Hewson, Brian Gleeson, Daryl McCormack, Assaad Bouab, Saise Ní Chuinn, Paul Tylak, Sharon Horgan, Jonjo O'Neill, Amy De Bhrún, Yasmine Akram, Maeve McGrath, Jake Farmer
As Houlihan discovers shocking revelations, the sisters face an impossible situation.
The sisters investigate a betrayal's truth. Houlihan and Loftus engage in a confrontation. The plot revolves around the sisters' search for answers and the clash between Houlihan and Loftus.
Ian helps the sisters cover their tracks, bringing him closer to Eva but further into Houlihan's spotlight.
In a bid to stay out of trouble, the sisters take the next step in their plan with Angelica - just as a desperate Eva puts a target on their backs.
Convinced that a blackmailer is to blame for their tragedy, the sisters look for evidence. Becka is shaken by life-changing news.
A tragic occurrence shatters the sisters' lives. Loftus and Houlihan's investigation takes an unexpected turn. Ursula reaches her breaking point.
As Detectives Loftus and Houlihan investigate, Grace's behaviour becomes increasingly erratic; Roger's sister, Angelica, stirs tensions.
Two years after JP's death, the Garvey sisters are moving on and finding new happiness. However, a grisly discovery puts them back under suspicion.