Reporter Bronagh Munro uncovers new evidence that casts doubt on the conviction of a man who has spent 19 years in prison for murder. Omar Benguit was jailed for killing 26-year-old Korean student Jong-Ok Shin as she walked home from a night out in Bournemouth in 2002. The only evidence to place him at the murder scene came from a heroin addict with a history of making false allegations against innocent people. Police used other vulnerable witnesses to support the addict's story, but some of them tell Bronagh they were pressured to make false statements. She also finds evidence that could give Omar Benguit an alibi for the night of the murder. His lawyer and family are convinced there has been a miscarriage of justice and are using the new evidence to try to take the case to the Court of Appeal for a third time.

Bronagh tracks down some of the witnesses, who testified against Omar, and makes some extraordinary discoveries.

Bronagh travels to Italy to investigate the past of an Italian suspect, named Danilo Restivo. Could Oki have been murdered by a serial killer?

Bronagh uncovers dramatic evidence about the main prosecution witness. Bronagh also investigates who else could have murdered Oki.

Bronagh tracks down someone, who claims he can provide an alibi for Omar on the night of Oki's murder. How credible is this alibi?

Bronagh meets the man, who went on trial with Omar Benguit. Why was this man cleared of all charges?

Reporter Bronagh Munro pieces together the events of the early hours of 12 July 2002, when South Korean student Jong Oki Shin was stabbed to death in Bournemouth. Bronagh examines the evidence that convicted Omar Benguit of the murder, after three trials.