There are further twists ahead for Nikki, Jack and the team as they work with the police to explore multiple avenues to solve a 20-year-old case.

Anne Lacey, Ellen Thomas, George Watkins, Hayley Carmichael, Hermione Norris, Jude Akuwudike, Melanie Kilburn, Michele Winstanley, Monika Miles, Neil Hobbs, Neil Pearson, Rupert Holliday Evans, Sally Rogers, Sharon Rose, Steve Nicolson