Barney holds his phone number up during the Superbowl and is inundated with phone calls from women. Meanwhile, Lily and Marshall set up a blind date for Ted for Valentine's Day and Robin and Ted get an unwanted surprise from Don.
The NCIS team launch a citywide manhunt when a navy machinist with high-level security clearance is found dead.
The NCIS team are on the case when a man's dark secret is exposed and a teenager's life is put at risk. Sam is caught in a dilemma.
There's trouble when an NCIS informer is arrested during an undercover op. Callen meets up with suspended ATF agent Anna Kolcheck.
NCIS looks into the disappearance of a Navy lieutenant commander who is working on foreign cyber threats with the NSA; the team celebrates the holidays.