Why are some lonely, young men a growing threat to our safety? In 2018, a Toronto man drove a van down a busy sidewalk, killing 11 people and injuring many more. He was linked to the "incel" movement, a dark online world fueled by violent misogyny, extreme isolation and perceived rejection. In the wake of the attack, Evan Mead discovers a disturbing connection to the perpetrator. They were former high school classmates; both outcasts, existing together on the fringes of social acceptance. How did two young men who started in similar circumstances, end up on such drastically different paths? This five-part series examines how socially-isolated young men can vanish into an online world of nihilism and despair that radicalizes them into angry — potentially deadly — misogynists. Hosted by Ellen Chloë Bateman and produced by Daemon Fairless (Hunting Warhead). For the best in true crime from CBC, ad-free, visit apple.co/cbctruecrime.