Sloane is adamant that a man who held her hostage and tortured her years ago in Afghanistan, believed to have been killed following her rescue, is in fact alive and in the same city.
Mike feels let down when his daughters aren't into celebrating Halloween with him the way they used to.
When a neighbour's home gets broken into, Mike thinks his fists and a cabinet full of rifles are enough to keep a home intruder at bay.
When a civilian scientist working with the marines is killed, and her advanced radar technology stolen, the team must scramble to find the missing technology and the culprit.
When a Japanese tourist is killed, her husband's evidence is vital in finding the culprit, but does he know more than he's letting on?