E1 - Episode 1: Part 1

Aired: October 29, 2013

On his first day on a new job DCI Tom Mathias investigates a blood soaked bathroom and the disappearance of 64 year old Helen Jenkins. The inquiry focuses on an old Children's home above the ravine spanned by the Devil's Bridge.

E2 - Episode 1: Part 2

Aired: October 31, 2013

E3 - Episode 2: Part 1

Aired: November 05, 2013

At a remote farmhouse, sixty-nine year old Idris Williams is discovered bludgeoned to death, and the investigation into his murder reveals the mountain’s bloody past.

E4 - Episode 2: Part 2

Aired: November 07, 2013

E5 - Episode 3: Part 1

Aired: November 12, 2013

In the isolated village of Penwyllt, the body of a young man is discovered in the murky depths of a quarry lake. But who is he, and was this an accident?

E6 - Episode 3: Part 2

Aired: November 14, 2013

E7 - Episode 4: Part 1

Aired: November 19, 2013

The body of a young woman is found abandoned but carefully placed in the marshes. This case, in the series finale, pushes DCI Mathias to the edge, both personally and professionally.

E8 - Episode 4: Part 2

Aired: November 21, 2013