Psychopathy is a socially devastating personality disorder, costing society billions, and resulting in terrible personal harm and suffering to others. Psychopathic individuals are characterized by a disconnectedness from, and callous (sometimes predatory) use of others to further their own gains. I will discuss the phenomenology of psychopathy, touching on developmental themes (can kids be psychopaths?), and its role in harmful, criminal, and violent behaviour. To what extent does psychopathy elevate a person’s risk for violence? What motivates psychopathic people to be violent? The talk will address how clinicians can integrate psychopathy into violence risk assessment and management – both for adults and youths. I will conclude with a description of what is known about treatment for psychopathic individuals.