Overview

• HBO Max confirmed that Tracy Ifeachor’s Dr. Heather Collins will not return for the second season following a creative team decision
• Sepideh Moafi has signed on as a series regular to portray a new attending physician in the ER ensemble
• Production, which kicked off in June, is now filming a single 15-hour shift set during the Fourth of July weekend
• Season 2 is scheduled to debut on HBO Max in January 2026, preserving the show’s one-hour-per-episode format
• The creative decision to remove Collins continues a narrative push to intensify lead Noah Wyle’s character arc by isolating his support network