The death of a boxer leads Vance to borrow the NCIS team and start investigating the fighter's death, while Gibbs digs into Vance's past.
The team searches for a missing book containing top-secret information, which belonged to an antiques dealer who was murdered.
At a high-security biological research facility, a scientist is deliberately exposed to a deadly toxin.
Four new residents begin work at the busiest ER department in the United States.
Christa asks Neal to perform a surgery that will save a patient's reproductive future.