Karissa Vacker

Despite pretending to play it cool, Barney is plagued by jealousy as a result of his girlfriend Quinn's occupation as a stripper, and he tries to get her to switch careers. Ted realises that he needs to repair his damaged friendship with Robin when all the women he meets online remind him of her. Meanwhile, Marshall's fretful over-preparation for the baby's arrival drives Lily to distraction.

NCIS investigates Marine Cpl. Laney Alimonte after evidence suggests she murdered her neighbour while being treated for insomnia by a hypnotherapist.

When Riggs visits his father-in-law in prison, a walk down memory lane reveals an old secret about his deceased wife. Meanwhile, Murtaugh tries to impress Captain Avery and Trish and Leo Getz try to solve a murder on their own after being united by the death of a mutual friend.