Amanda Schull (born August 26, 1978) is an American actress and former professional ballet dancer. She is known for her lead role in the 2000 film Center Stage, and for her recurring roles on the American television series One Tree Hill and Pretty Little Liars. She starred as Dr. Cassandra Railly in the Syfy television series 12 Monkeys, and played a recurring role on the USA Network television series Suits before being promoted to series regular for the show's eighth and ninth seasons.