The murder of 16-year-old schoolgirl Christelle Maillery, committed at Le Creusot in 1986, is now resolved… 30 years after her death. The fact that the culprit is now under lock and key owes much to the obstinacy and the intelligence of one man, Raphaël Nedilko, a detective who is asked in 2009, 23 years after the event, to re-open the investigation. A cold case that marks and affects him deeply