Unforgotten (2015 – ...)

The discovery of skeletal remains—a young man's bones unearthed during demolition—ignites a decades-old mystery. This season plunges into the lives of four individuals whose fates have been inextricably linked for nearly forty years, as a long-dormant secret begins to surface. What started as an investigation quickly becomes a reckoning with the past, revealing that some truths refuse to remain hidden and will ultimately demand to be faced.

The discovery of fragmented remains pulled from a river plunges DCI Cassie Stuart and DS Sunny Khan into a chillingly complex investigation. The victim? David Walker, who vanished without a trace back in 1990. With decades passed and only the faintest whispers of clues to follow, Cassie and Sunny find themselves painstakingly piecing together a puzzle centered around four individuals – each with a link to Walker and harboring deeply buried secrets that could point to murder. As they relentlessly pursue these connections, the picture refuses to sharpen, instead growing increasingly distorted. This decades-old mystery will push their professional partnership—and perhaps something more—to its limits.

Roadwork on a busy stretch of the M1 highway yields a chilling discovery: human remains unearthed during routine repairs. Now, Detective Cassie and her team must unravel the mystery surrounding these unexpected finds, launching an investigation that promises to be both complex and deeply unsettling.

The new season plunges the team into a chilling case right from the start: a body, brutally dismembered, is unearthed at a scrap metal yard. The unsettling detail? Investigators suspect it’s been hidden away – frozen—for nearly three decades. A distinctive tattoo linking the victim to Millwall Football Club provides a crucial clue, ultimately identifying him as Matthew Walsh, a young man who vanished without a trace back in March of 1990.

Stepping into the role previously held by Cassie Stuart, DCI Jessica James now leads the team, following a period of transition. Haunted by an unsolved murder from 39 years prior, the detectives embark on a compelling journey to bring closure to a decades-old mystery. A shocking discovery – human remains unearthed beneath the rubble of a demolished house – reignites the investigation and compels the present-day police force to excavate a deeply buried history. As they delve deeper, four key suspects come into focus, and with each layer of their past exposed, the long-hidden truth behind this tragic crime begins to surface.

A disturbing discovery on Whitney Marsh throws Jess and Sunny into an urgent investigation when suspected human remains surface. Forensic analysis by Dr. Balcombe paints a chilling picture: the remains are recent, hinting at a brutal scenario – the body was deliberately dismembered and hidden. Now, Jess and Sunny race against time, widening their search with a growing fear that other pieces of this tragic puzzle remain scattered nearby.