S10, E16: A psychotic patient threatens the hospital with a stolen Army tank; Dr. Kovac's French friend visits; an E.R. staffer has a heart attack; 13-year-olds have chlamydia.
Jessica Chastain
Paul Blackthorne
Sam Anderson
Steven Culp
Simone-Elise Girard
Scott Grimes
Laura Cerón
Troy Evans
Rossif Sutherland
Khleo Thomas