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.

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.

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

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