Welsh Thriller 'Hidden' Returns for a Second Season This June

The second season of Welsh thriller Hidden will premiere on streaming service Acorn TV this June and will feature an all-new six-episode mystery that may be even darker than its first.

Line of Duty's Sian Reese-Williams and Requiem's Siôn Alun Davies return as DI Cadi John and DS Owen Vaughan to tackle an all-new, season-long investigation in a mining town in the slate-strewn mountains of Blaenau Ffestiniog in North Wales.

The series' first season saw Cadi and Owen investigating a murder and missing person case involving a body discovered in a lake in Snowdonia National Park. The victim turns out to be a young woman who disappeared five years prior when she was just sixteen and kicks off a fear of a serial kidnapper.

Now, nine months after the events of Season 1, Cadi and Owen receive their next assignment, courtesy of an anonymous phone call that announces a lonely former local teacher has been found murdered in his bathtub. The man, a chemistry instructor named Geraint Ellis, had something of a shady past of his own, and rumors swirl about the reasons behind his sudden and unexpected retirement.

As the investigators attempt to figure out what happened, three local teens emerge as suspects - Mia Owen, Connor Pritchard, and Lee Williams. But why? Was Ellis targeted because of his previous sins? Or was he just a teacher attacked by a gang of disaffected teens? The answer involves delving into a world of lies, revenge, cruelty, and neglect.

Watch the trailer for Hidden Season 2 now.