The team race to find the vigilantes responsible for a number of attacks happening every 27 minutes. Prentiss and Unit Chief Andrew Mendoza head the investigation to identify the perpetrators.
On the eve of the wedding, a tipsy Barney wanders out of the hotel, bumps into two hapless young men and takes them under his wing.
Jane and Maura enter the high stakes world of competitive bass fishing when a leading fisherman dies during a tournament.
After a 50-year-old tape recording left by a murder victim is found, the NCIS team tries to exonerate Ray Jennings, the Marine serving a life sentence for the crime.