Victoria Platt as NCIS Special Agent Veronica "Ronnie" Tyler,Wilmer Valderrama as NCIS Special Agent Nicholas "Nick" Torres, Mark Harmon as NCIS Special Agent Leroy Jethro Gibbs.
Gibbs and Ducky recall the case that brought them together on NCIS' 400th episode. "Everything Starts Somewhere" is the second episode of the show's 18th season
Fornell and Gibbs stake out a pill mill hoping to follow a drug rep up to his boss in the drug ring responsible for the drugs which nearly killed Emily.