Benton (Eriq La Salle) strongly suspects that Vucelich (Ron Rifkin) is manipulating the results of his study on the "clamp-and-run" procedure. Elsewhere, rumors buzz throughout the ER that Greene (Anthony Edwards) and Lewis (Sherry Stringfield) are lovers. And Carter (Noah Wyle) risks his career when he goes ballistic while dealing with an alcoholic patient named Nathan (Mark Pellegrino) and Nathan's "enabler" girlfriend, Angel (Charlotte Ross). ~ Hal Erickson, Rovi