A breast exam lands Pratt in hot water when a woman informally accuses the young doctor of sexual harassment. Abby ponders how to get the attention of her contentious patients during her psych rotation and Neela finds herself studying strokes in a lab populated by brainy but bizarre graduate students. Weaver vows to fight for her baby son and Chen is at wit's end when she brings her combative and ailing father home. Sam is baffled by her ex's return - and Kovac's take on the new man in Alex's life.