A jury has found Shahidul Ahmed guilty of killing teenager Rachel Manning 13 years ago.
This is the fourth trial in the murder case where Rachel was found dead at Woburn Golf Course after she disappeared during a night out in Milton Keynes. Her body was found two days later.
Rachel had been at a fancy dress party with her boyfriend Barri White when she got separated from him later that evening.
Mr White was originally convicted for her murder, but was cleared at a retrial after a Rough Justice documentary was broadcast on the BBC.
Ahmed was charged years later, but a jury failed to come to a verdict in his first trial.
Ahmed was sentence to life and to serve a minimum of 17 years in prison.