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

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 'Jessica Jones' and 'Uncoupled' stars, respectively, add to the already announced cast of Uma Thurman, Peter Dinklage and several returning stars led by Michael C. Hall.