Unsolved: The Man With No Alibi. In the early hours of 12 July 2002 Jong Ok Shin, a 26 year old Korean student, was brutally stabbed to death, as she walked home, after a night out in Bournemouth. Omar Benguit, a heroin addict, was convicted of the murder and sentenced to life in prison. Journalist Bronagh Munro investigates.

• Bronagh Munro