A woman is murdered in front of her 2-year-old in '90s London. While his father tries to shield him from a media storm, the police identify a key suspect.

As DI Pedder's undercover operation develops, another murder hits the headlines. André and Alex move abroad, but their grief continues to follow them.

Over a decade later, old evidence is re-examined by new eyes on the case. Will André and Alex finally get justice — or is there more to the story?