When the body of a teenage girl who went missing at the turn of the millennium is found at a building site off the M1 motorway, four men are placed under the spotlight and their relationships are tested to the limit.
Nicola Walker and Sanjeev Bhaskar star as detectives investigating a 'cold' cuddle case of 39 years ago.
When the bones of a young man are found beneath the footings of a demolished house, an investigation begins that will unravel the lives of four people who have been waiting for this moment for nearly forty years, as they discover that the past can't, and won't, stay buried forever.
Unforgotten - Series 3, Episode 1 Synopsis and Schedule