Police Tapes - Season 1

Susanna Reid gains unprecedented access to never seen before police tapes from the investigation into the murder of Becky Watts, revealing the inner workings of the case and the strategies detectives used to snare her killers.

Susanna speaks to Becky's father Darren at the home where Becky died, along with her stepmother [and Nathan's mother] Anjie, about their thoughts and emotions during the investigation, and the impact the crime has had on their family.

She also interviews senior investigating officer DCI Richard Ocone who gives her a vivid insight into the techniques and strategies officers used to elicit evidence in the interview room following forensic searches, which led to the grim discovery of Becky's body and the dark motivation behind her murder being revealed.

The murder of 11-year-old Rhys Jones shocked the nation. With access to the police investigation, Susanna Reid hears the stories which led to the killers being caught.

Susanna Reid gains exclusive access to police interview tapes from the investigation into the murder of Sharon Birchwood, a 52-year-old woman with no apparent enemies or criminal connections.

Susanna Reid gains privileged access to police interview tapes from the investigation into one of Britain's most prolific serial killers, John Cooper, who murdered four people in Wales.

After brutally murdering the quartet in Pembrokeshire, Cooper eluded prosecution for the crimes for 20 years until a combination of a new detective team and advances in forensic science finally brought him to justice in 2011, when he was convicted for the killings.

This programme tells how the cold case team who picked up the investigation discovered that four years after murdering the first couple in 1985, he had appeared on gameshow Bullseye, which was weeks before the vicious shooting of another couple taking a coastal walk on the last day of their Welsh holiday.

With much of the crime scene evidence long gone, and no witnesses to help the enquiry, nearly everything hinged on whether the detectives could find the key to make him admit the truth about his murders.

Susanna interviews the leading detectives in the case, some speaking for the first time, who tell her how they approached the investigation into their suspect, who was known to police but had never before talked under police questioning