Amanda MacDonald

Jane gets the CBI involved in a case in Napa in order to focus on Sheriff McAllister, while Van Pelt and Rigsby take a trip down the aisle.

Derek and Meredith try (unsuccessfully) to be discreet as they spend the night together at Meredith's house, but their haggard appearance speaks volumes to everyone - including Bailey, who warns Meredith to end the relationship. Meanwhile George suspects an anesthesiologist of drinking on the job but is reluctant to speak up about it, Alex treats a former schoolmate who finds honor in self-mutilation, Izzie's boyfriend takes extreme measures in order for them to spend more time together, and Cristina seems to be battling a case of the flu.

The team investigate a serial killer who is targeting women on the campus of a small Midwestern college.

When Jim learns of Trey's St. Patrick's Day fundraiser plans, he offers his expertise in an effort to save Trey and the Celtics from embarrassment.