Some incidental foot contact in a men's restroom at a truck stop enrages one of the men who gives the other a piece of his mind. But what he discovers in the next stall is a man beaten to death. Longworth gets on the case and follows a trail of clues to a luxury rehab center. Meantime, Carlos Sanchez's attention is pulled between the crime scene, helping a sexy former colleague he has a "history" with and his daughter's quinceanera party. Plus, Callie and Jeff struggle to keep it together during Ray's absence. Natalia Cigliuti guest stars.