What is the relationship between criminality and biology? Both criminologists and biologists have begun to speak of a tantalizing but disturbing possibility: that criminality may be inherited as a set of genetic deficits that place one at risk for theft, violence, and sexual deviance. In The Criminal Brain, well-known criminologist Nicole Rafter provides an introduction to current biological theories of crime, with predictions of how these theories are likely to develop in the future. By tracing the birth and growth of these theories, as well as by recognizing historical patterns, she offers ways to evaluate new theories of the so-called criminal brain that may radically reshape ideas about the causes of criminal behavior.