The Best Seasons of Spooks

Every season of Spooks ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Spooks!

Tense drama series about the different challenges faced by the British Security Service as they work against the clock to safeguard the nation. The title is a popular colloquialism for spies, and the series follows the work of a group of MI5 officers based at the service's Thames House headquarters, in a highly secure suite of offices known as The Grid.