In addition to serving as executive producer, director and co-writer, the "Barry" co-creator is being eyed to star in the project

A series about the Rev. Jim Jones, the charismatic cult leader behind the 1978 mass-murder suicide at the Peoples Temple Agricultural Project (aka Jonestown) in the Guyanese jungle, is in development at HBO,

Aid. Variety has learned exclusively that Hader and Daniel Zelman are currently developing an HBO series centered on Jim Jones and the infamous events at the Peoples Temple Agricultural Project, a.k.a.