The British actor exclusively spoke with ET during a break from filming the season two finale.
The drama, inspired by true events, comes to select theaters March 2019.
ET spoke to the 'Bachelor' standout at the show's 'Women Tell All' taping, which airs Sun., Feb. 25 on ABC.
Executive producer Ryan Murphy’s longtime collaborators, Brad Falchuk and Tim Minear, offer a glimpse into the star-studded drama led by Angela Bassett, Peter Krause and Connie Britton.
