Tuesday 1 September 2026 (UK)
Episode 1 of 4
A year after surviving a brutal attack, former detective Huw has retreated to a remote coastal home with his wife Alice, determined to leave the past behind. Meanwhile, their daughter Margot is preparing to move in with her boyfriend Sam, a relationship Huw struggles to embrace. But their fragile peace is disrupted when letters begin arriving from imprisoned serial killer Patrick, proving that he still has the power to intrude on their lives.
Meanwhile, Detective Jenny Atkins is approached by Natalie Gower, whose husband Jonathan disappeared years earlier after becoming convinced he was being watched. Natalie is convinced that Jonathan was Patrick’s first victim, and Jenny begins to suspect there may be a connection worth exploring.
As Huw struggles to ignore Patrick’s attempts to draw him back into a dangerous psychological game, tensions begin to surface within his family. His daughter Margot experiences a series of disturbing incidents that leave her feeling increasingly vulnerable, while Alice becomes convinced that Patrick’s influence remains a threat to them all.
With old fears resurfacing and unanswered questions surrounding Jonathan’s disappearance, Huw finds himself pulled back toward the man he hoped never to face again. As Patrick’s shadow lengthens over every aspect of their lives, it becomes clear that imprisonment has done little to diminish his ability to manipulate those around him.
