Criminal psychologist Julia Shaw discusses the psychology of "evil" as a continuum of traits, covering the dark tetrad, serial killers, murder, and why ordinary people can commit horrific acts under certain conditions. She explains her research on false memories and how easily they can be implanted or distorted, the limits of lie detection and intuitive judgments like creepiness, and how these insights apply to therapy, policing, AI systems, and environmental crime. She also talks about sexuality, bisexuality, polyamory, sexual fantasies and kinks, and her work on green crime and the psychology of those who commit serious environmental offenses.