During the 1970s, 1980s and early 1990s, the castle was used as a location for shooting films and television programmes. These include the Doctor Who serial The Time Warrior, broadcast in 1973–74,[17] and a 1991 movie of Robin Hood starring Patrick Bergin and Uma Thurman.[18] From 1982 to 1986, Treasure Trap, one of the world's first live action role-playing games, took place on the site.[19][20] In 1988 the castle was purchased by an American, Evelyn Graybill, for £1 million. She renovated most of the building and secured planning permission to convert it into a hotel.[21]