The Mortal Instruments: City of Bones

Jonathan Rhys Meyers is in talks to join 'The Mortal Instruments,' based on the young adult novel by Cassandra Clare, which already boasts Lily Collins in the lead role.

Young adult fiction is the latest craze in Hollywood and studios are doing everything they can to lock up as many properties as humanly possible that even hint at being successful with children. And now two actors from two very different, and popular, television shows, have been cast in the latest hot property.