There's no doubt that the show benefited from the largely masterful use of flashforwards, giving us tantalising glimpses into the future and sending our imaginations into a frenzy as we scrambled to figure out the missing pieces in the grand puzzle. Just who are the Oceanic Six, why has Hurley gone mad, and what led the polar bear to the desert?
The emergence of Charles Widmore's Kahana freighter ensured that Lost provides as much thrills in the present as it does when peeking at the past or future. The vicious Keamy and his faceless mercenaries scythed their way through the jungle, with the execution of Alex in front of her stunned father Ben Linus providing a real shock - and vitally adding to the increasing ambiguity surrounding Linus. Could he be the good guy after all?
It also brought the wonderful figure of Frank Lapidus onto the shores, a real cult figure. Michael Dawson was also lurking on board as Ben's mole and thankfully his enthralling backstory was the main focus of an entire episode that further explored the mystical properties of the island, for Michael couldn't kill himself if he tried. Alas, the island - in the form of dead man walking Christian Shephard - allowed him to sail off to the afterlife in the end, tragically without a reunion with son Walt.
Still, at least we were given the saccharine-laced smoochfest between Des and Penny in the end. Given what we know from the flashforwards, can Des prevent Ben from killing off Widmore's daughter as revenge for the slaying of Alex? Let's hope Alan Dale returns to reprise his role as Charles in the future and takes a break from his apparent quest to appear in every cult television show known to mankind. The scope of the uber-villain's dealings is immense - just witness the stunning images beamed back from the crash wreckage of the fake Oceanic Flight 815.
Ultimately, none of them were at it like rabbits at all, unless Bernard and Rose got jiggy on the sly. For we now know what happens to rabbits on the island - they get stuffed into a time-travelling device by a sinister Oriental chap lurking in the underground Orchid station.
Also, one particular scene stands out in the series. This occurred when Claire's mother turned up at Christian's funeral to spill a few beans to Jack, who stuck to his cover story and claimed to have never met his newly discovered half-sister. The look on Jack's face was harrowing to behold, especially when Claire's mother looked at the baby in Kate's arms - not knowing that Aaron is her own grandson! This moment could have been melodramatic and overblown, but instead was wisely understated.
Lost's fourth season was superb, as an intricate puzzle starts to slot together merging past, present and future. All eyes are now on next year, with the finale's revelation that Locke was the man in the coffin prompting plenty of speculation. Fingers crossed that we discover just what Sawyer whispered to Kate before leaping out of the helicopter and how much of a bill Richard Alpert has racked up with his Botox treatments. We can't wait.
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