All I have to say is: AAAAAAAHHHHHHH!!!!! Can't believe we have to wait until next season for the resolution of this storyline! Dixon puts it together that Sydney is not simply just SD-6 and he confronts her. She tells him that's she's not betraying the United States, but doesn't tell him that SD-6 is a sham operation. He leaves her, and Sydney doesn't know if Dixon will turn him into the Security section. Sloane spills the beans to Emily. She does come around and accepts what Sloane is. Sloane wants the Alliance to spare Emily. The Alliance offers to bring in Sloane into the inner circle, but the price of admission is for Sloane to eliminate Emily. What a quandary for Sloane... Sydney has bigger fish to fry (having to get the Rambaldi document page from SD-6 and the vial of liquid to expose the plans on the page from the CIA) The page tells Sark and company how to use this device called "The Circumference". Haladki slipped up when he referred to the device by name, and clued Jack that he was the mole in the CIA. He was dealt with summarily by Jack. Will got the same dental treatment that Sydney got earlier in the season. At least Will got a bit of revenge at the end. "One in Five!" It felt like the Titanic at the end when Sydney and Vaughn were running for their lives after Sydney set off the bomb to destroy the big ol' contraption/circumference. Too bad Vaughn was caught on the other side of the last door. Is he dead, we don't know. Looks like Sydney finally gets to meet her mom, who's revealed to the big wig calling the shots (Kasinov was just a front man). I had this part figured out earlier in the episode, if not last week. Anyways, good episode, but so frustrating as hell due to the cliff-hanger nature of the show.