The presence of crime and disorder in a neighbourhood functions as a 'signal' to both residents and outsiders, that is 'read' and used to inform beliefs concerning the safety of an area. Certain disorderly behaviours or objects are considered to have a disproportionate influence in shaping both individual and collective perceptions of risk or decay, Martin Innes - founding father of reassurance policing - argues. The contributors in this volume examine the conceptual and practical consequences of this theory for Belgium and the Netherlands.