The Smoking Man
Scully leaves The Smoking Man and gives the disc to The Lone Gunmen to analyze, but it turns out that The Smoking Man swapped the disc for a blank one. She goes back to his office but it has been emptied. Mulder informs her that this was a con and she was used to retrieve this information, but he does not understand why The Smoking Man left Scully alive. The final scene shows The Smoking Man throwing the real disc into a lake.