Unfortunately, criminal behavior surrounds us in our society--from petty theft and vandalism to multimillion-dollar white-collar crime to shocking terrorism attempts and school killings. Invariably, one of the first questions is, "Why did they do it?" Criminal psychology seeks to solve this complex puzzle. In this four-volume reference work, a unparalleled team of leading experts offer an exhaustive look at the history, developments, emerging and classic research issues, controversies, and victories in the expanding field of criminal psychology. The first volume examines the general theories in the study of criminal psychology. The second volume focuses more specifically on research of criminal behavior and crime types, while the last two volumes delve into criminal justice and forensic applications. The comprehensive content allows readers to better understand criminal behavior and appreciate the specific criminal justice and forensic settings in which this theory and research is applied, such as criminal profiling, forensic assessment of danger, and correctional rehabilitation and offender reentry.