All Available Season All Season Season 1 Mar, 2019 12 episodes 6.8 Season 2 Jul, 2020 12 episodes 7.6 Host Donnie Wahlberg chronicles the twisted lives of diabolical criminals, such as Charles Manson, Aileen Wuornos, John Wayne Gacy, the Rev. Jim Jones, and others. Season 3 May, 2021 12 episodes 7.6 Season 4 Jun, 2022 12 episodes 7.8 Season 5 Apr, 2023 12 episodes 7.6 Season 6 Dec, 2024 4 episodes 8.0