Unforgotten - Season 3 May 2026

When the body of 16-year-old Hayley Reid is found under the M1 motorway, Cassie and Sunny reopen a case from the turn of the millennium. Hayley had gone missing while on holiday in a seaside town in 1999, and the investigation soon centers on four close friends who were staying at a nearby holiday rental at the time.

: The investigation ultimately reveals that Tim Finch , the mild-mannered doctor, was responsible for Hayley's death. Unforgotten - Season 3

Season 3 was highly acclaimed for its "emotionally intelligent script" and "pitch-perfect casting". Reviewers from sites like Rotten Tomatoes praised it as a moving and human drama that excels in the "slow-burn" mystery genre. When the body of 16-year-old Hayley Reid is

The season explores how a long-buried lie can devastate lives in the present. As Cassie and Sunny peel back the layers of the suspects' lives, they discover fractured relationships and deep-seated guilt. Season 3 was highly acclaimed for its "emotionally

(Nicola Walker): The empathetic but increasingly weary lead detective.

: It is discovered that Finch was a serial predator, and Hayley was just one of his victims. Critical Reception

(Sanjeev Bhaskar): Cassie’s loyal partner, known for his signature backpack and steady demeanor. The Four Suspects : Tim Finch (Alex Jennings): A highly respected local GP.