This true crime series exposes the complex mystery behind a murder (or string of murders) committed by members of a vicious cult. Each episode zeros in on the cult responsible for a homicide and begins to unravel the cult's genesis from the leader down to the individual members.
- S1 E1 - Vampire ClanAfter Jennifer Wendorf, 17, comes home to find her parents murdered and sister missing, the investigation uncovers a complicated web tracing back to a cult of self-proclaimed vampires.
- S1 E2 - Kirtland MurdersPolice in Ohio discover a family of five killed and buried in a barn belonging to a cult. As they question the cult, they learn the sinister details of power and manipulation leading up to the murders.
- S1 E3 - Killers Of RuloAfter learning a religious cult is stockpiling weapons on an isolated farm in Nebraska, FBI agents press an informant for details on the group's diabolical and murderous leader.
- S1 E4 - Palo MayombeThe investigation into a missing student leads officials to a cult known for practising witchcraft led by a former male model and a high school cheerleader.