This paper provides a critical examination of the prevalence of danger
ous offender legislation in modern criminal justice systems. The debat
e about this has been dominated by issues of ethics and effectiveness.
Here, though, I want to examine the significance of this legislation
and some of the theoretical issues that this raises. This involves dis
cussion of the way in which 'dangerousness' as a social construct has
changed historically and similarly the mode of its calibration. Ultima
tely, the dangerousness legislation today involves the use of a largel
y unnoticed strategy of control - actuarialism; and seems more likely
to have an effect on the behaviour of potential victims of crime rathe
r than dangerous offenders themselves.