France literally 'discovered' sexual abuse following neighbour Belgium's Dutroux case in the late 1990s. Since then, sex offenders have been the focus of politicians, media and law-makers' attention. Further law reforms have aimed at imposing mandatory supervision and treatment, and in rare cases, preventive detention. The legal framework for mandatory supervision and detention is rather complex, ranging from a mixed sentence (custodial and mandatory supervision and treatment upon release or as a stand-alone sentence) to so-called 'safety measures', which supposedly do not aim at punishing an offence, but at protecting society. The difference between the concepts of sentences and safety measures is nevertheless rather blurry. In practice, however, courts have used safety measures quite sparingly and have preferred mandatory supervision as attached to a sentence, notably because it is compatible with cardinal legal principles. Procedural constraints have also contributed to this limited use. Moreover, the type of supervision and treatment that can thus be imposed is virtually identical to that of ordinary probation. It is, however, noteworthy that a higher number of offenders with mental health issues who are deemed 'dangerous' are placed in special psychiatric units, something that has not drawn much attention on the part of human rights lawyers.