Plot summary
The investigations that Mulder and Scully previously began with conspiracy theorist Tad O’Malley have awakened powerful enemies. A widespread panic begins as people all over the country suddenly start falling gravely ill, and Scully must look within to try and find a cure. Meanwhile, Mulder confronts the man whom he believes to be behind it all, but another figure from Mulder and Scully’s past may prove to be the key to their salvation.
Credits
Adapted from Wikipedia contributors, The X-Files season 10. HTML formatting and reference markers removed.