All movies starring Mamie Gummer The Ward (2010) ★ 5.5 Trailer Stars: Amber Heard Mamie Gummer Danielle Panabaker Genres: Horror Mystery Thriller An institutionalized young woman becomes terrorized by a ghost. Emily Owens M.D. (2012–2013) ★ 7.5 Trailer Stars: Mamie Gummer Justin Hartley Aja Naomi King Genres: Comedy Drama Romance A young doctor realizes that working as an intern in a big hospital is very much the same as being in high school.