As Scruggs, Penny, Jack and Jean learn more about the Arch and their mysterious science teacher, Doc Thorson, they are drawn into a deadly mystery right in their hometown of Peabody, Wisconsin. No cosmic travel, alien life, or invasion: this is a killer of a mystery embedded deep into the memory of this sleepy little town, a secret hidden long ago. and it's coming to life with a vengeance, driving young athletes into insanity and death! Doc Thorson and Agent McKenna must neutralize a deadly threat ready to spread like wildfire. A secret enemy is determined to stop them, and he's not particular about who he harms. Martial arts, hard science, lots of adventure, and even a dose of comedy have the four Peabody friends on the case.