Marion Berntsen was in her 70s when she began renting rooms in suburban Illinois, appearing to be a quiet, elderly lady. What her housemates didn't realize is that Marion was actually a domestic terrorist, determined to upend their lives.  Listen to The Opportunist ad-free, with bonus content, at KastMedia.com/KastPlus Listen to The Opportunist ad-free on Amazon Music You can reach out to us at [email protected] Find the episode transcript here: tinyurl.com/opppodcast You can purchase Opportunist merchandise here: https://theopportunistpodcast.com/ Thank you to our sponsors: Babbel: Get up to 55% off and start speaking a new language at babbel.com/OPP Earth Breeze: Subscribe and save 40% by going to earthbreeze.com/OPP to get started with eco-friendly laundry detergent Better Help: Find an online therapist and enjoy 10% off your first month at betterhealth.com/OPP Shopify: Get a $1 per month trial period and start selling on Shopify at shopify.com/OPP Zocdoc: Download the Zocdoc app for FREE and book a top-rated doctor today at zocdoc.com/OPP