When a 13-year-old girl arrives at Angels Memorial following a seizure caused by spina bifida, the doctors are shocked to learn she is Campbell's daughter.
Willis, Leanne and Jesse risk their lives to operate on an officer with an explosive bullet lodged in her leg.
The doctors treat cult members who unwillingly survived a mass suicide attempt, and Mario decides to connect with his late father's girlfriend.
Willis and Campbell are sent to a Russian submarine in U.S. waters to treat a sailor badly wounded during an explosion.
Malaya must inform a college student who regains consciousness at Angels Memorial that she's the victim of a rape. Willis and Campbell butt heads.
The Angels Memorial doctors treat victims caught in a landslide, and a group of children come in from a camping trip with measles putting the entire ER at risk.
On Halloween night, Willis, Noa and Elliott rush to the scene of a fire at a haunted theatre.
Willis defies Campbell's orders when he helps Mario and Heather perform a radical procedure on a maintenance worker stuck under a boiler that exploded.
Willis must help a promising young soccer player make a life-altering decision after he's seriously injured when a bus carrying his entire team crashes.
New Season: Colonel Ethan Willis joins the team at Angels Memorial from the Department of Defence and takes Dr. Mike Leighton on a harrowing helicopter ride to save shark bite victims.