Going into labor just before Thanksgiving, Carol (Julianna Margulies) gives birth to twins, with OB nurse Abby Lockhart (Maura Tierney, in her first series appearance) and Kovac (Goran Visnjic) in attendance. At first, things go relatively smoothly, but complication quickly set in, forcing Carol's Lamaze coach, Greene (Anthony Edwards), to skip Elizabeth Corday's special Thanksgiving dinner. As a result, poor Corday (Alex Kingston) is left alone to entertain Greene's irascible father (John Cullum) and surly daughter (Yvonne Zima). And back at the ER, Dr. Dave (Erik Palladino) collaborates with Carter (Noah Wyle) on a difficult diagnosis. ~ Hal Erickson, Rovi