There are just now four hours remaining in what has undoubtedly been one of 24's best ever seasons. But with the clock ticking, will Jack be able to thwart evil good evil Tony's plans to let off the wayward canister? And how will he manage to do that whilst fighting his increasingly debilitating infection?

Anyway, below you'll find four - yes, FOUR! - previews from episode 21, which airs this Monday on Sky1. Enjoy!









How are you enjoying 24 this season? Add your comments to this entry below!