Doug faces possible criminal charges after Ricky Abbott dies when Ross shows Joi how to bypass system lockouts to give Ricky a lethal dosage of dilaudin. Doug is delegated to desk duty, Carol's clinic is shut down for acquiring the P.C.A. machine for Ricky, and Greene and Weaver face future disciplinary action for not reporting Doug's tampering with the double blind study. Carter and Lucy discover a mutual attraction, and the word spreads throughout the hospital. Benton studies with a sign language instructor. Romano begins his first day as acting ER chief.