In an August 2006 interview with tvguide.com, Margulies said she was close to accepting an offer to return to "ER" for a four-episode arc, with Noah Wyle, that filmed in Hawaii during the 2005/06 season. However, she decided against it at the last minute. Margulies was invited to return during "ER"'s final season, but the actress initially turned down the offer, saying she felt like she left Carol Hathaway in the perfect place and could not imagine bettering her departure episode. However, Margulies did return to "ER" for one episode during its 15th and final season.