Recently, a round of bad guy casting pointed to the fact that the next big YA novel-to-movie franchise, The Mortal Instruments, might be getting ready to move forward in earnest, and another chunk of casting announcements that came out today seems to serve as confirmation. Joining names like Lily Collins and Jamie Campbell Bower – who are cast as the young, attractive leads – come a couple of more experienced actors who have been tapped to take on some of the adult roles, and one more (relatively) young actor, who is set to play a hip side-character. First up, Game of Thrones’ Cersei Lannister, Lena Headey, has been tapped to play Jocelyn Fray, the mother of the film’s protagonist, Clary. Seeing as much of the first film involves her disappearance, she probably won’t have much to do here, but one can only imagine she’s also been locked in for potential future installments. Next on the list is Mad Men’s Lane Pryce, Jared Harris, who has signed on to play a character named Hodge Starkweather. Starkweather serves as a live-in tutor to many of the young demon hunters who make up the main cast, so Harris’ extreme Britishness should serve him well there. Finally, All About Women actor Godfrey Gao is taking on the role of Magnus Bane, a flamboyant hipster who also happens to be the most powerful Warlock in Brooklyn. Glamour shots of the actor on the Internet confirm that he should be pretty enough for the part.