From the makers of Hinterland comes "a compelling blend of police procedural, serial-killer thriller, and dark mystery" (DigitalSpy.com) set in the beautiful but foreboding mountains of northern Wales. After years away from her isolated hometown, DI Cadi John (Sian Reese-Williams, Requiem, Emmerdale) returns to help her sisters care for their ailing father. Paired with the capable but overloaded DS Owen Vaughan (Sion Alun Davies, 35 Diwrnod), she soon begins investigating a young woman's suspicious drowning. With bruises on the victim indicating that she was shackled before her death, Cadi realizes that someone is abducting women and holding them captive. When another girl goes missing, the detectives rush to apprehend the culprit before she becomes his next casualty. Through interweaving narratives, this Welsh noir exposes the brutal secrets that lie beneath the surface of small-town life. "A sharp twist on your typical crime thriller" (DigitalSpy.com), Hidden also stars Rhodri Meilir (My Family), Gwyneth Keyworth (Doctor Thorne, Case Histories), Gillian Elisa (Stella, A Mind to Kill), and Ian Saynor (Doctor Who).
DI Cadi John investigates the death of a young woman found in a river, who appears to have been shackled for some time before her demise. Cadi and her colleague DS Owen Vaughan identify the body as Mali Pryce, a troubled girl who disappeared years ago.
Admonished by his domineering mother, Iona, Dylan skips work and develops an unhealthy obsession with Lowri, a young nurse. Meanwhile, the detectives interview Mali's friend Sara, who points them to Mali's dangerous ex-boyfriend.
Cadi argues with her sister about their ailing father. Later, Lowri recounts the details of her attack to the police, leading them to question her abusive ex-boyfriend, Marc.
Dylan brings home a wounded Megan, the university student he hit with his truck, and won't let her leave. Iona warns him against keeping Megan at the house while the police are investigating and urges him to get rid of her.
While dealing with her father's failing health, Cadi attempts to track down Dylan's truck. With Megan still locked up, Dylan's neighbor makes an unexpected visit, and Lowri struggles to recover from her attack.
Dylan releases Megan from her shackles but threatens to chain her again if she tries to run away. Cadi questions a man in prison who was convicted for the murder of another young girl, a crime that Cadi believes may be linked to Mali's death.
When Megan is reported missing, Cadi and Owen are certain her disappearance is connected to the other cases, but they are no closer to discovering Dylan's identity. Dylan's daughter, Nia, talks with Megan and tries to help her escape.
With Megan and Nia safe, the police search Dylan's house, but he has disappeared. Cadi interviews Iona, hoping to get information about the abducted girls and capture Dylan at last.
