Timeline: Nicola Payne disappearance
Two men have been cleared of the murder of Nicola Payne nearly 24 years ago. The mother-of-one from Coventry, who was 18 at the time, went missing while walking to her parents' house. The case has remained open ever since - here are the key moments in the long-running investigation.
14 December 1991
While walking to her parents' house in Henley Green from the Winston Avenue home she shares with her boyfriend just half a mile away, Nicola goes missing.
Her parents make a new appeal for information, although her mother says she is unlikely to be found alive.
Police say the case will remain open until they find out what happened.
A series of adverts are displayed on lorries in an appeal for information.
The case features on The Missing, a television programme aimed at reuniting missing persons with their families.
Nicola Payne's son Owen, now 16, makes a fresh appeal for information.
A 37-year-old man is arrested on suspicion of abducting and murdering Nicola, although no charges are brought.
Police launch another appeal, 20 years after Nicola's disappearance.=.
Police launch a search of parkland off Purcell Road after receiving new information. A day later, two men are arrested on suspicion of conspiracy to prevent the lawful and decent burial of a body. Nothing is found in the park and the men are later released without charge.
Police make a fresh appeal to trace two men seen near where Nicola Payne went missing.
Officers say calls following the latest appeal have produced 25 new leads.
Police reveal they are carrying out a preliminary search of an area of land on a local nature reserve, off Dunrose Close in Binley.
Two men are charged with Nicola's abduction and murder. Nigel Barwell and Thomas O'Reilly, both from Coventry, were originally arrested in December 2013. A 52-year-old woman who had been arrested on suspicion of perverting the course of justice is released without charge.
Mr Barwell and Mr O'Reilly are cleared of murdering Nicola by a jury at Birmingham Crown Court.