The "Game of Thrones" actor will play Michael Peterson's adopted daughter in a dramatized series about his case, alongside actors Toni Collette, Parker Posey and Colin Firth.
A highlight of the event will be serial killer discussion panel “Mark of a Killer,” which features forensic psychology professor Dr. Katherine Ramsland, former FBI criminal profiler Mark Sefarik and forensic psychologist Dr. Joni Johnston.