They say when you die, your body loses 21 grams in weight. Everybody. Spooky right? Using this as a hook, this award heavy film brings together three disparate characters, their lives interweaving to a final, shocking ending.

Such a simple idea--yet so fiendishly complex in the execution. 24, as surely everyone knows by now, is a thriller that takes place over 24 hours, midnight to midnight, in 24 one-hour episodes (well, 45-minute episodes if you extract the ad breaks). Everything to take place in real time--on-screen and off-screen time the same--which means no flash-backs, no flash-forwards, no nice handy time-dissolves. Every strand of the plot has to be dovetailed and interlocked to make sure that things happen just when they should, in the right amount of time. Not that easy.

Creator Robert Cochran and his team of writers and directors have done a pretty impressive job in putting the jigsaw together and keeping the tension ratcheted up high, as Federal Agent Jack Bauer (Kiefer Sutherland) hares around LA trying to stall an assassination attempt on a black Presidential candidate and rescue his wife and daughter from the clutches of the Balkan baddies. Twists, turns, revelations and cliffhangers are tossed at us with satisfying regularity. It’s not perfect: we get some hokey plot devices (instant amnesia, anybody?) and the final twist, once you start thinking back, makes no sense whatsoever. There are altogether too many huggy family moments ("I love you, Dad." "I love you, son"); and as for überbaddie Dennis Hopper’s "Serbian" accent…

Even so, this is undeniably mould-breaking TV. Sutherland, rescuing his career from the doldrums in one heroic leap, fully deserves his Golden Globe. Sets and locations are artfully deployed--we gain a real sense of LA’s splayed-out geography--and Sean Callery’s score is a powerful, brooding presence. Like Murder One and The Sopranos, 24 is one of those series future TV thrillers will have to measure themselves against.

On the DVDs: 24 is released in a six-disc box set. On discs 1- 5 there are no extras, but disc 6 includes the "alternative" ending and a preview of Series 2, presented by an urbane Kiefer Sutherland, that tells us precisely nothing. The transfer, in 16x9 widescreen and 2.0 Dolby Digital sound, does the high production values of the original every justice.--Philip Kemp

This limited-edition DVD box set contains the complete first and second series of 24. Read our reviews of the individual series here: 24, Series 1, 24, Series 2.

Jack Bauer is having another one of his "very bad days" in the second series of the ground-breaking real-time thriller 24. Once again the hours are ticking by with more guaranteed cliffhangers than a convention of mountain climbers. Holed up in a Los Angeles condo and estranged from his daughter, Jack is no longer on the government payroll; unfortunately for him, this small fact doesn't seem to matter to President David Palmer and the NSA who call him back in to the CTU and give him 24 hours to infiltrate a terrorist organisation who are planning to detonate a dirty bomb in the city of angels. All Jack wants is to get his daughter out of the city, unfortunately Kim's new employer, the abusive father of the child she is nannying, has other ideas.

Fans of the original won't be disappointed, as there are more than enough shock moments in the first few hours to hint at the climactic build-up to come, while newcomers can quickly get involved in the lives of Jack and his family. There are some new characters to bolster the veteran cast and, interestingly (although not surprisingly given the outcome of the first series), Jack's character has taken an altogether darker, more psychopathic turn. The danger the characters find themselves in also has a much more global impetus, grounded as it is in the war against terrorism. Although the territory is more familiar this time around, this second series is just as much a high-tension, taut, adrenaline-fuelled ride as the first series, and one that will have you glued to your TV for the next 24 hours. --Kristen Bowditch

24 as surely everyone knows by now, is a thriller that takes place over 24 hours, midnight to midnight, in 24 one-hour episodes. Geddit? This was must-see television, and underlined the fact that British made drama is generally old and stale.