Bar Paly

Lily and Marshall forget to fix Ted up on a blind date for Valentine's Day; Robin's obnoxious colleague invites her to a party at his apartment.

The team seeks out the murderer of a navy machinist who had high security clearance. Meanwhile, Sam helps Hetty search for the mole.

A maintenance worker with a dark past puts a local teenager in danger. Meanwhile, Sam must choose which of his colleagues he will take to the football game.

A Navy lieutenant commander working on foreign cyber threats with the NSA disappears; the team gathers to celebrate the holidays.

After a Navy reservist is killed while protecting a city councilman, Sam is sent undercover in a private security firm with links to several criminal organizations. Also, Callen and Anna (Bar Paly) discuss the next steps in their relationship.

Sam goes undercover using an old alias to take down a drug lord; Callen and Anna pause their romantic night to escort a prisoner.