Mercedes López Renard

The hunt for a marine's murderer puts Gibbs on a collision course with an old friend, FBI Agent Fornell.

A couple travels across the ocean in search of a diagnosis from House.

An attorney is found dead while working late with his boss. When the first suspect confirms an alibi, detectives Ed Green (Jesse L. Martin) and Nina Cassady (Milena Govich) follow up on a lead from the victims phone records. The last call made was to a high-end escort service, the escort who was last seen with the victim at the Four Seasons Hotel bar, prints happen to match a print from the crime scene, so Lieutenant Anita Van Buren (S. Epatha Merkerson) decide to bring her in. Once she is questioned, Valoso reveals some unusual information about Weaver's connection to the escort service herself. Fred Dalton Thompson and Sam Waterston also star.

A shooting sends two of Drew's friends to the ER. Meanwhile, a woman's psychosis worsens, becoming a danger to herself and her father; Paul breaks hospital rules to treat a 9-year-old boy with severe cystic fibrosis; financial problems plague Ragosa.