Bygones (S08E17)

Romano forces Corday to work in the ER, where she begins to realize that Susan may hold the key to her estranged husband's disturbing behavior; Weaver tries to keep it together after Lopez is reported to have been lost in a school fire; a pair of college students are rushed into surgery following a knife attack on campus that hits close to home for one of the County staffers; and Abby settles into life at Luka's while she searches for a new home. (National Broadcasting Company (NBC))