Investigative journalist Maria Awes receives a call from serial killer Todd Kohlhepp who claims he has murdered more than his seven known victims; Awes teams up with former FBI profiler John Douglas and biographer Gary Garrett to unravel the truth. Digging into Todd Kohlhepp's troubled youth, Maria Awes interviews his first rape victim and finds another possible victim; doubts emerge that Kohlhepp is the Superbike killer, which appears to be supported by interrogation footage.