Ashley convinces Mr. Smith to send the H.E.A.T. team to a small Caribbean island to investigate the death of a C.I.A. colleague. While the team pursues a gang of gunrunners, a British policeman chases Cat for a burglary she committed before she joined the H.E.A.T. team.

Mike suspects that a high-school buddy, now linked with a terrorist group, may be planning an attack on politicians attending a free-trade conference in Mexico.