Game of Thrones alumna Lena Headey is returning to HBO with a lead role opposite Woody Harrelson, Justin Theroux and Domhnall Gleeson in The White House Plumbers, HBO’s five-part limited series, which revisits one of the biggest political scandals in American history, Watergate. The project hails from Veep executive producers Alex Gregory, Peter Huyck, David Mandel and Frank Rich, and Ruben Fleischer and David Bernad’s The District. The limited series is a co-production between HBO and wiip.