"A man is savagely murdered outside Portland, and Detective Mason Callahan finds blood-spatter evidence that tells a troubling story. Files reveal the murder victim, Reuben Braswell, was a radical conspiracist. In his home, investigators find pages of diatribes against law enforcement as well as ties to Mason's fiancée, FBI special agent Ava McLane. The victim was her informant--and had strong reasons to be paranoid. To Ava, Braswell's rants were...