March 25 (UPI) -- John Lithgow is reprising his role as the Trinity Killer in Dexter: Resurrection . Deadline confirmed Monday that Lithgow, 79, will return as Arthur Miller , aka the Trinity Killer, in the Dexter and Dexter: New Blood sequel series at Showtime. Advertisement The outlet also said Jimmy Smits will reprise his Dexter character, Miguel Prado. Lithgow previously teased his involvement in an interview with Variety . "I just went back to do a day. They're rebooting the entire Michael