Prosecutors are to consider whether to charge a man with the abduction and murder of a Devon schoolgirl in 1978.
Genette's bike and newspapers were found in the road
Genette Tate, 13, vanished while cycling on her newspaper round in Aylesbeare, where she lived.
Devon and Cornwall Police, who have reinvestigated the case, will send a file to the Crown Prosecution Service (CPS) early next year.
It will ask the CPS to consider whether charges can be brought against Robert Black, 57, for the murder of Genette.
Britain's longest missing person inquiry began in August 1978 when Genette's bicycle and papers were discovered lying in Within Lane at Aylesbeare.
No trace of Genette has ever been found, but detectives discovered that Mr Black was in the area at the time she went missing.
Police have held three lengthy interviews in Yorkshire with Mr Black.