 In order to catch Khasinau and get closer to finding her mother, Sydney and Vaughn set up an undercover transaction for a Rambaldi artifact with Khasinau s representative, Mr. Sark. But Sydney s cover may be compromised when a SD-6 agent is sent in to thwart the sale: that being Dixon himself. Meanwhile, Will is enticed by his unseen source to continue his investigation of SD-6 when he learns that Jack Bristol was one of his kidnappers. Also, Sloan s cancer-stricken wife, Emily, tells Sydney that she knows about SD-6, which forces Sloane to make the most difficult decision of his life of whether or not to have her killed for knowing of the existence of the organization.