Unforgotten

DCI Cassie Stuart and DS Sunny Khan investigate when a skeleton is found beneath a demolished house. The discovery of a car keys lead the pair on a trail to identify who the victim is, and they find a diary of a young man missing since 1976.

After identifying the body in the cellar as Jimmy Sullivan, the hunt for his murderer begins. Cassie and Sunny begin the investigation by following up on the names written in Jimmy’s diary. In Liverpool, Cassie meets Jimmy’s mother, who is relieved at the prospect of finally finding out what happened to her son after he went missing. The name ‘Frankie C’ is identified as Sir Phillip Cross – a newly government-appointed entrepreneurial czar, who denies that he ever met Jimmy.

Cassie and Sunny visit a priest who remembers Jimmy fondly, but unfortunately Father Robert Greaves is unable to identify ‘Jo-Jo’, the mysterious person who gave Jimmy the diary. The investigation also leads to another person who remembers Jimmy well, Eric Slater, who used to be a bookkeeper at Arlingham house.

The investigation into Jimmy’s death continues, with the discovery of marks on his body consistent with known gangland torture methods. Cassie and Sunny question Sir Phillip to find out exactly what his involvement was with a prominent East End crime family and Eric and Claire's anniversary party gets underway.

Sir Phillip Cross makes a difficult decision in order to protect his family and salvage what is left of his reputation. Ray returns home to find Lizzie gone and a note that reads ‘I’m sorry’ and Father Robert comes clean to his family and the police.

Father Robert’s revelations have lasting repercussions. Things are especially difficult when Caroline goes into premature labor. Bella and Josh deliberate over how best to deal with their father and the search for Lizzie continues. Maureen is finally able to lay Jimmy to rest.