Marshall, Lily, Robin, and Kevin celebrate Valentine's Day with a weekend in Vermont; Barney meets his match.
When a Navy captain is murdered in his hotel room, the NCIS team must find his pregnant companion and protect her from unknown assailants. Meanwhile, Jimmy brings his future father-in-law to work.
Zoe faces the skeletons in her closet when her mother tries to make peace with her. And is the young medic being stalked by a dead man?
Zoe learns that she needs more patients to keep her half of the practice with Brick.
Zoe learns that the women in her family were once southern belles, so tries to join Lemon's clique to embrace her heritage.
