The group makes a pact that whichever of them dies first will contact the others from beyond the grave.
Additionally, Flanagan promised other familiar faces from previous projects will “pop up as guest stars along the way.”
Fong is set to executive produce the series alongside Julia Bicknell and Flanagan through his banner Intrepid Pictures, which has an overall creative deal with the streaming service, with Trevor Macy.
Flanagan is set to adapt the series alongside Leah Fong, who worked as a writer on The Haunting of Bly Manor, the follow-up to the 41-year-old writer/director’s adaptation of Shirley Jackson’s novel The Haunting of Hill House.