This monograph is “intended to strengthen and improve the dissemination of evidence-based rehabilitative technologies for offenders, within the multidisciplinary context of correctional treatment” (p.x). Sections of this document include: executive summary; introduction - effective clinical practices and the critical need for collaboration; what evidence-based practice (EBP) is; overarching principles of effective correctional treatment; common therapeutic factors - what works in treatment generally; specific evidence-based modalities for criminal justice clients; and conclusion-what have we lost. There are four appendixes: confidentiality in correctional treatment; the separate and complementary functions of corrections and treatment; coerced treatment; and quality assurance.