Tudors star joins the cast According to Deadline, actress Maria Doyle Kennedy (The Tudors) will have a recurring role in the Showtime series. She’ll play a nanny hired by Dexter Morgan (Michael C. Hall) to watch his kids since, well, you know… I’m not going into spoiler territory. Yesterday, it was revealed Shawn Hatosy was cast to play a bad guy in the fifth season. Source: Deadline Show Comments |