Four more instalments of the crime series written and produced by Lynda La Plante. In 'Trial and Retribution V', DC Mike Walker (David Hayman) is assigned to investigate after a 17-year-old skeleton is uncovered. In 'Trial and Retribution VI', DI North (Kate Buffery) is on the case of a girl who has been abducted in a wood. In 'Trial and Retribution VII', DCI Connor (Victoria Smurfit) and DC Walker are brought back together to investigate after a severed hand is found in the River Thames. Finally, in 'Trial and Retribution VIII', a murder enquiry is opened after a young prostitute falls to her death from a high-rise block.