The 10-episode series from Ryan Murphy stars Nash as Detective Lois Tryon, who's investigating a series of "heinous crimes" in a small community. She teams up with nun and journalist Sister Megan, as they "string together clues" and "find themselves ensnared in a sinister web that only seems to raise more questions than answers." The show also stars Courtney B. Vance, Lesley Manville, Micaela Diamond, Nicholas Alexander Chavez, Raven Goodwin and Travis Kelce, in his first acting role. Grotesquerie premieres Wednesday, September 25 at 10:00 p.m. ET/PT on FX, next day on Hulu.