X Files #01 X Marks the Spot: A Novel (X Files Middle Grade, Band 1)

The FBI thinks that Mulder is weird--or worse. He keeps insisting that aliens are running amok on earth. His lovely and level-headed partner agent Dana Scully, is supposed to keep in line. But that's hard to do when they're investigating an Oregon high school class full of corpses and the walking dead.
Yes, Mulder's theories about the class of '89 are beyond strange. But in a world where minds are turned off like lights, bodies blossom with otherworldly scars, and the night explodes with blinding evil, Fox Mulder may not be weird at all. He may just be the one with the answers nobody's ready to hear… The members of an Oregon high school class are dying off one by one. Agents Mulder and Scully must try to make sense of a town gone mad, where teenagers' minds are turned off like lights, mysterious fires explode after dark, and bodies blossom with otherworldly scars. But Mulder's explanations are strangely unpopular, especially when he starts digging up graves. It seems someone'or something'is terrified he'll uncover the truth . . .