Leanne ten Brinke, Ph.D. is an Associate Professor at the University of British Columbia, where she directs the Truth and Trust Lab. As a social and personality psychologist, her research investigates trust, deception, and dark personality traits across diverse populations—from incarcerated individuals to hedge fund managers and U.S. Senators. In her forthcoming book, Poisonous People, she reveals how dark personality traits shape our institutions and relationships, while offering practical strategies to recognize and counteract their harmful influence. Her research appears in dozens of peer-reviewed publications and has been featured in leading media outlets including the New York Times, Financial Times, Washington Post, Harvard Business Review, BBC, NPR, and CBC. When not unraveling the mysteries of humanity’s dark side, she enjoys life in British Columbia, Canada with her husband and two golden retrievers.