Why 'St. Denis Medical' Won't Be Airing New Episodes for 3 Weeks After Tonight's Episode (Which Features a Guest Star)

St. Denis Medical is airing its final new episode of 2025 this evening (Monday, December 15)! The episode, called A Waste of Time and Marble, airs at 8 p.m. ET on NBC and Peacock. Heres an episode synopsis: With the threat of a nurse walkout, Alex is caught between her colleagues and Joyce, Ron and []