Sunny and Jess's personal lives go from bad to worse while they struggle to keep focused. Meanwhile, the suspect list grows and a mother and son are put under the microscope.
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 5, Episode 4 Synopsis and Schedule