The ER must be evacuated when several workers from a chemical plant track benzene all over the floors. After Weaver is felled by the poison, Carter takes over, directing the evacuation. Dr. Corday does a ride-along with EMTs and rescues a man trapped under a building. Doug and Carol are trapped in the elevator with a sick child.
Season 4 Episode 15 of ER resulted in a 0.00 rating in the 18-49 demographic.
s04e01 - Ambush
s04e02 - Something New
s04e03 - Friendly Fire
s04e04 - When the Bough Breaks
s04e05 - Good Touch, Bad Touch
s04e06 - Ground Zero
s04e07 - Fathers and Sons
s04e08 - Freak Show
s04e09 - Obstruction of Justice
s04e10 - Do You See What I See?
s04e11 - Think Warm Thoughts
s04e12 - Sharp Relief
s04e13 - Carter's Choice
s04e14 - Family Practice
s04e15 - Exodus
s04e16 - My Brother's Keeper
s04e17 - A Bloody Mess
s04e18 - Gut Reaction
s04e19 - Shades of Gray
s04e20 - Of Past Regret and Future Fear
s04e21 - Suffer the Little Children
s04e22 - A Hole in the Heart
ER follows the medical personnel and patients in the emergency room of Chicago's fictional County General Hospital.
As the doctors and nurses of County's ER confront the daily challenges of a busy urban hospital, including overcrowded waiting rooms, staffing shortages, and the impact of life-and-passing decisions. While they teach the next generation of doctors, the each must tackle demands of their personal lives, at times unsuccessfully.
The staff is led by Chief of Emergency Medicine Dr. Luka Kovac, a gifted teacher who came to Chicago from Croatia following the tragic passing of his wife and children, but now finds his life on an upswing, and Dr. Kerry Weaver, County's Chief of Staff, a compassionate doctor and uncompromising administrator whose rigid style has isolated her from the medical staff. The ER is staffed by fourth-year resident Dr. Gregory Pratt, who puts patients before procedure, yet fears the responsibility now thrust upon him, feisty nurse Samantha Taggart a tough single mother attempting to balance her difficult personal issues with her demanding professional life, and Scott Grimes as the less than capable Chief Resident Dr. Archie Morris, along with a trio of second year residents: Dr. Abby Lockhart a former ER nurse turned doctor, building a new career and a new life that has taken a sudden and unexpected turn, Dr. Neela Rasgotra recently married and finding her role in the ER after a long period of uncertainty, and Dr. Ray Barnett who must make the choice between his career as a doctor and the rock band in which he plays. Featured this season as recurring characters are John Leguizamo as the innovative, and problematic, Dr. Victor Clemente, Kristen Johnston as demanding Nurse Manager Eve Peyton, and Leland Orser as the ER's highly individual surgical attending, Dr. Lucien Dubenko.