Donal MacIntyre interviews former Metropolitan Police Detective Chief Inspector Sue Hill to find out how she and her team cracked the murder of lawyer Tom ap Rhys Pryce.

Donal MacIntyre delves into the case of Sylvia and Peter Stuart, with Detective Chief Inspector Andy Guy, to discover how a missing persons case became a murder investigation.

Donal meets DI Jim Hodgson to discover how a womans body found naked at the scene of a fire raised suspicions of murder and an attempted cover up.

Donal meets former Met Detective Inspector Tony Bishop to discover how the fatal poisoning of Lakhvinder Lucky Cheema was solved.

Donal MacIntyre meets former DI Simon Shuttleworth to discover how Leicester Police captured the murderers of 45-year-old Timothy Smith, found fatally wounded in a crashed car. 

Donal meets DCS Martin Brunning to discover how he cracked the shocking murder of Jolanta Dumciuviene, whose body was found wedged under the mattress of her own bed.

Donal talks to DCI Clive Driscoll, to find out how his team uncovered a disturbing underworld of modern-day slavery and people trafficking, in an investigation sparked by murder.

Donal MacIntyre talks to DS Julie Mackay about the investigation into the murder of Paul Pass, who was found beaten and stabbed to death in his own home.

Donal Macintyre is joined by former CI Andy Tattershall to discuss a gangland hit, which would push him to the limits of his work.

Donal MacIntyre meets Detective Inspector Paul Franklin to discover how Wiltshire Police solved the attempted murder of Victoria Cilliers at the hands of her husband, Army Sergeant Emile Cilliers.