The X-Files, tome 4 : Resistance

For years, FBI agents Fox Mulder and Dana Scully toiled in the X-Files Unit, a one-office division of the Bureau dealing with "unsolvable" cases related to unexplained phenomena. Eventually, both agents left the FBI and began new lives in peaceful anonymity. However, recent events prompted them to return to the Bureau and the X-Files. Now, Scully receives an invitation from Firas Ben-Brahim after months of silence, and she soon discovers the dark secrets he's been keeping from her. Once the final piece of the puzzle falls into place, it threatens to send Mulder over the line, just as shadowy forces are revealed to have compromised the upper echelons of government. Collects issues #14-17.