Ashley Platz

Parker's delinquent past resurfaces when NCIS is called to Philadelphia to investigate the death of a Navy petty officer.

Adam’s mission to take down organized crime on the Island goes sideways when deadly chlorine gas he was using to bait a big fish falls into the wrong hands. Also, Adam begins to doubt Jessie’s (Christine Ko) allegiance. Christine Ko and Michael Imperioli guest star.

The International Response Team searches for the killer of a woman on a yoga retreat in Nepal, and Monty goes on his first international mission with the team.