Book reviews 221

There may be huge uncertainty in England and Wales about the future shape of youth justice and the organisation of the probation service, but behind the scenes and interna-tionally those who think about the theory and practice of offender supervision appear remarkably resilient. This fat collection of 24 essays, sandwiched between an editorial introduction and conclusion, is the result of a network (Collaboration of Researchers for the Effective Development of Offender Supervision, CREDOS) established in 2007 which has since met three times and involves members from Australia and North America as well as Europe. Disappointingly, however, despite the fact that their inaugu-ral meeting took place in Italy, all the contributors are, with the exception of two Dutch academics, from common law jurisdictions. As Friedrich Lösel (2012) has highlighted in a forthcoming essay, most of the research on what works in offender supervision remains confined to the English-speaking world, which makes one wonder whether tricks are being missed. With the exception of Tom O’Connor and Brad Bogue’s account of Circles of Support in Canada, for example, there is practically no mention of volunteers or men