A lot of double crossing going on in this one, each one bigger than the last. The bulk of this one follows Sayid in the Flashforward and Isla, the women he is targeting. He is after her mysterious Boss, who we don't know yet. But the twist is that she is after his boss, who we don't know at the moment. It's not till the very end, after Sayid has been shot by her that he shows up at a Pet Clinic to get stiched up. It's then that it's revealed that his boss is none other than Ben. What the hell! That's a cliffhanger.