EXCLUSIVE: Former Dexter executive producer/showrunner Clyde Phillips is returning to Showtime as showrunner of the network’s half-hour series Nurse Jackie. With him on board, the dark comedy starring Edie Falco has been renewed for a fifth season. On Nurse Jackie, Phillips succeeds co-creators Linda Wallem and Liz Brixius who recently left after serving as co-showrunners for the first four seasons.