A building collapse at a rodeo injures a cowboy (Timothy Busfield), who begins to show bizarre symptoms. Meanwhile, a patient appears to be suffering from an appendectomy that Krista had performed weeks earlier, and Scott causes a serious car accident and insists on treating the teen victim.
Mike's tragic past comes back to haunt him, and he's forced to seek help from an unusual source. Meanwhile, Jimmy's moral compass is put to the test.
The U.S. government enlists WITSEC to hide one of Latin America's feistiest political activists, but everything goes south when the budding Evita moves to the bad part of town.