Episode 1

Lawyer, wife and mother Faith Howells is drawn into a mystery when her husband and business partner Evan disappears. He leaves for work but never arrives. His sudden absence strikes deep into the heart of his tiny Welsh community and forces Faith to come back from extended maternity leave to defend a hopeless vagrant on a shoplifting charges. As an increasingly desperate Faith searches for clues, she uncovers new revelations about Evan's private life and questions how well she really knows the man she loves.

Episode 2

Faith represents Steve Baldini, a reformed criminal who may know something about her husband's disappearance. Back at the office, Tom makes a troubling discovery in the company archives that he believes will upset Faith's trust of her husband. DI Susan Williams, a vindictive police officer who has crossed swords with Faith in the past, turns her attention towards Faith's recent behaviour.

Episode 3

Now in custody, Faith butts heads with DI Williams, who believes she may have more to do with Evan's disappearance than she is letting on. At the police station, Faith encounters Reverend Talbot, a family friend, and represents him on charges of misusing church funds. Tom enlists the help of his friend, Swansea detective DCI Parry, to look into his son's files, while Lisa tracks down a lead at a lap-dancing club Evan was seen frequenting. Troubled by the discovery of a DNA test kit in Evan's office, Faith confronts Marion and uncovers a dark family secret.

Episode 4

Fearing for her family's safety, Faith takes shelter in a hotel and meets with Steve, who tells her that Evan might have had links with a notorious family of drug dealers. As Faith looks into the lead, she is drawn deeper into Abercorran's sinister underbelly. Meanwhile, Bethan begins to feel the aftershocks of Marion's revelation. Dr Alpay proposes a deal to Cerys, and a disturbing discovery in the woods by Terry results in Williams building a case against Faith.

Episode 5

Shaken by the break-in at her home, Faith buries herself in work and takes on the case of an elderly farmer who is caught in a dispute with a ruthless landowner. Meanwhile, Steve's growing closeness to Faith begins to attract suspicions from Terry. Arthur receives a mysterious package, Dr Alpay names a price for information about Evan, and Faith receives a disturbing visit from Gael Reardon.

Episode 6

When Evan's car is found abandoned at the docks, Faith is dragged to the police station for an interrogation. When Steve attempts to help, he too finds himself caught in the firing line of the law. Meanwhile, an increasingly conflicted Tom uncovers terrible secrets about his son, Bethan's erratic behaviour puts a strain on her marriage to Terry, Faith prepares to do a secret deal with Dr Alpay, and DI Williams resorts to desperate tactics to break Faith.

Episode 7

Following the crash, Williams resorts to dirty tricks to shift the blame onto Faith. Meanwhile, Terry looks into Dr Alpay's background and finds an ally in DCI Parry, Steve risks returning to his criminal past to help Faith, and Delyth makes a shocking discovery in Evan's will. Faith and Cerys push for a court hearing to get the children back, but Faith finds herself lost and alone within her community.

Episode 8

With Williams now out of the way, Faith fights for her children in a heated court battle that risks tearing the Howells family apart. As the clock ticks on Faith's debt, Steve makes a desperate and deadly pact with his former employers to secure her freedom. Tom and Marion must face tough truths, and Faith finally learns the truth behind Evan's disappearance.