A chance meeting with child killer Gary Marcoux inspired Olson Jr. to commit his own string of murders. What measures would law enforcement have to take to identify and locate the victims of his crimes?Subscribe to Parcast's new Podcasts HOSTAGE now!Sponsors!Caffé Monster - Available in Vanilla, Mocha, and Salted Caramel.Pretty Litter - Head to PrettyLitter.com and use promo code SERIALKILLERS for 20% off your first order.Upstart - Go to Upstart.com/SERIALKILLERS to find out HOW LOW your Upstart rate is! Learn more about your ad choices. Visit podcastchoices.com/adchoices