"Praesidium" – NCIS: Los Angeles
When someone tries to kill Hetty, Vance remains committed to keeping her safe. Never one to sit still, Hetty escapes from her trial and is taken to an empty dinosaur museum. But, instead of getting hurt, she's greeted by Vance who warns her that there may be a mole compromising their operation.
Watch NCIS: Los Angeles on CBS All-Access.