This documentary series tells the shocking story of Todd Kohlhepp, a serial killer whose Amazon reviews linked to his violent crimes. The series starts with Kala Brown's rescue from a shipping container and ties it to Kohlhepp's review of padlocks. It explores his disturbing past and double life as a real estate agent, linking his online comments to real-life murders like the Superbike shop killings. This is the chilling tale of a killer hiding in plain sight.