The investigations that Mulder and Scully previously began with conspiracy theorist and web-TV show host Tad O'Malley seem to 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.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
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.