Zero Sum

Summary

After a swarm of bees mysteriously kill a postal worker in an enclosed restroom, Assistant Director Skinner covers it up by destroying the evidence. In order to complete the task he poses as Agent Mulder, however his deception backfires. When Mulder finds out and confronts him, Skinner reveals that he is working for the Cigarette-Smoking Man in order to obtain a possible cure for Scully's cancer.

Guest stars

• William B. Davis as Cigarette Smoking Man
• Mitch Pileggi as Walter Skinner
• Laurie Holden as Marita Covarrubias
• Nicolle Nattrass as Misty Nagata
• Theresa Puskar as Mrs. Kemper (uncredited)
• John Moore as 2nd Elder (uncredited)
• Allan Gray as Dr. Peter Valedespino
• Fred Keating as Ray Thomas
• Lisa Stewart as Jane Brody
• Christopher Newton as Photo Technician