Though details about his new character have been kept tightly under wraps, Harris will take on the role of Lowell

Neil Patrick Harris has joined the cast of “ Dexter: Resurrection ” as a guest star. Details about the “How I Met Your Mother” star’s role are unknown, other than his character’s name: Lowell. Production for Showtime’s “Dexter” sequel series began in January in New York. The show is set to debut on Paramount+ With Showtime in the summer.