For years, Mark Koster was presumed gone—declared dead without a body ever being found. But when his remains surface inside his own home, investigators must unravel how a killer hid in plain sight and how one confession finally exposed the truth behind a death that went unnoticed for years. View source material and photos for this episode at: anatomyofmurder.com/the-man-beneath-the-floorboards Can’t get enough AoM? Find us on social media! Instagram: @aom_podcast | @audiochuck Twitter: @AOM_podcast | @audiochuck Facebook: /listenAOMpod | /audiochuckllc Hosted by Simplecast, an AdsWizz company.