The ER is on guard as Gates gathers the new interns to treat a terrorist, but it's the new doctor and her tough disposition that has everyone on the defensive.

Cast: Parminder Nagra, John Stamos, Linda Cardellini, Scott Grimes, David Lyons, Angela Bassett, Leland Orser, John Aylward, J.P. Manoux, Gil McKinney, Troy Evans, Yvette Freeman, Julia Jones, Shiri Appleby, Julian Morris