Former “All My Children” star T.C. Warner (ex-Kelsey Jefferson) has joined the cast of the NBC pilot “After Hours,” which centers on a group of Army doctors who work the night shift in the emergency room at San Antonio Medical Center. The series is described as a cross between “ER” and “Mash,” with storylines loosely based on true incidents that have occurred at a real-life hospital in San Antonio, Texas. Warner will portray Amy Budden, a nurse at the hospital.

Leading the cast of “Hours” is Eoin Macken (“Merlin,” “The Tudors”), who will portray TC Callahan. The character is described as a corpsman who returns after serving a tour in Afghanistan and has trouble dealing with civilian life and hospital management.

Produced by Sony Pictures Television, “Hours” also stars Jill Flint (“Royal Pains”) and Freddy Rodriguez (“Ugly Betty”).