Raised by her father, an ex-CIA agent, in the wilds of Finland, Hanna's upbringing has been geared to making her the perfect assassin. Sent into the world by her father on a mission, Hanna journeys across Europe, eluding agents dispatched after her by a ruthless intelligence operative. As she nears her ultimate target, Hanna faces startling revelations about her existence.

The eighth season of the British spy series "MI-5," which follows secret agents as they foil evil plots around the globe, begins with the fallout from Harry's kidnapping by the Russians. A mysterious organization known only as "Nightingale" is the ongoing focus of the eight episodes. And Lucas' relationship with CIA agent Sarah Caulfied (Genevieve O'Reilly), reignites concerns over his loyalty. This season also sees the exit of one of the few original cast members, Malcolm Wynn-Jones.