And so is Alex Krycek. He leads Mulder to a man who is carrying into US territory and the troubles begin.
Easy how Mulder fell under Krycek's spell once again for the truth. I liked how Skinner supported Mulder but I loved it even more Scully supporting Mulder and asking how far she would follow him. Also, her silence about Mulder's whereabouts before the committee was perfect for two reasons: it had nothing to do with the real reason and the loyalty in their more than amazing relationship.
Mulder is exposed to the black oil - and betrayed by Krycek once again - and I wonder if him and Scully getting exposed to the black oil made William a special boy.