MI-5(BBC's Spooks) follows Section B, led by Senior Case Officer Tom Quinn as they unravel the devious terrorist plots set out by various groups such as smugglers and drug traffickers. Section B is a team of spies from the MI5 counter-terrorism department tasked to crack the world's most sinister criminals' operations and place them right where they're supposed to be—behind bars to ensure national security. However, being a spy is never easy. Often they have to sacrifice deceiving the people closest to them to keep their identities a secret. MI5 features Matthew Macfayden as Tom Quinn, with Keeley Hawes and David Oyelowo. MI-5 airs on A&E.