[Student tragedy. Forensic-psychiatric and legal medicine aspects of an unusual crime].

The unusual circumstances of the violent killing of an 18-year-old girl by her 18.8-years-old schoolfriend led us to undertake a forensic-psychiatric analysis of the offence action as well as a presentation of legal-medical points of view. The crime, which can be classified as a collective lover crime for which there is no parallel in the literature, was only solved 9 months later when one of the two delinquents confessed a further offence. The killing was planned and prepared, the victim being buried hurriedly in a previously made hole in a wood after she had been strangled.