They were all bright, well-liked and socially responsible kids-the last students on earth who would smuggle guns into high school. The nation is gripped by the shocking crimes: "good kids" who are suddenly, inexplicably lethal, shooting their classmates before fatally turning their guns on themselves. When Connecticut mom Dr. Lexi Bradley gets the call that her son Juan has become one of those shooters, her life is turned upside down. Ten years ago, Secret Service Agent Bryan Atwood became an expert in school violence. Now the nightmare is back. Just as he is assigned to this new rash of killings, an MRI of Juan's brain reveals what must be pure science fiction. With Lexi's help, Bryan is determined to unearth the truth before more children die, but investigating a cross country trail of buried horrors casts them both into a dangerous world where corporate greed can lead to sudden death.