After a Marine is found murdered in Quantico hours after calling Gibbs to discuss a possible case, Bishop and McGee go undercover as a married couple to run surveillance on a Marine Lieutenant and his wife.
Sarah introduces her friend Eve to the Dicks and Axel is smitten, but he is trying to keep it strictly professional at least until they solve the case involving Eve, her mum, and a medium.
Valentine's Day has arrived and Will's luck with the ladies is in when he scores a date and an invite to a cat party.