America's sexiest secret agent makes James Bond’s life look like a walk in the park. The lovely Jennifer Garner plays agent Sydney Bristow who is a double agent working for the CIA and evil organisation SD-6, whilst trying to keep her secret lives from everyone – hence the title.

With more twists, turns and sub plots than you can shake a Walther PPK at, this highly-charged tale of undercover espionage has been keeping fans on the edge of their seats for five seasons.

Unlike your typical secret agent drama its creator JJ Abrams, the man behind Lost, angles it as more of a family drama. So when Sydney’s not fighting the baddies she’s working at her relationship with her father, coming to terms with the loss of her mother and dealing with the men in her life.

Season four is available on Virgin Central from 20th February and carrries on where season three ended, with Sydney discovering a classified document which reveals that her father executed her mother!