Jan. 12 (UPI) -- Domhnall Gleeson will join FX's cast for The Patient and play opposite Steve Carell in the limited series, according to a press release by FX.
In the psychological thriller, created by Joel Fields and Joe Weisberg, a psychotherapist (Carrell) finds himself held hostage by a serial killer (Gleeson) requesting him to help curb his homicidal urges.