Michael C. Hall Dexter Morgan Actor, Executive Producer Uma Thurman Charley Actor David Zayas Angel Batista Actor Jack Alcott Harrison Morgan Actor Ntare Guma Mbaho Mwine Blessing Kamara Actor Kadia Saraf Detective Claudette Wallace Actor Dominic Fumusa Detective Melvin Oliva Actor Emilia Suárez Elsa Rivera Actor James Remar Harry Morgan Actor Peter Dinklage Leon Prater Actor Neil Patrick Harris Lowell , The Tattoo Collector Actor Krysten Ritter Mia Lapierre , Lady Vengeance Actor Clyde Phillips Executive Producer Scott Reynolds Executive Producer Tony Hernandez Executive Producer Lilly Burns Executive Producer Marcos Siega Executive Producer, Director Tanner Bean Writer Katrina Mathewson Writer