The Hidden

In the shadow of Colorado's Rocky Mountains, a killer seems to be rewriting history—one body at a time. When historian Scarlet Barlow photographs what she believes are fellow tourists, only to discover the figures are murder victims arranged in chilling echoes of an unsolved Civil War-era killing, she finds herself entangled in something far darker than local legend. Worse, the FBI agent assigned to the case is her ex-husband. Heather Graham weaves together a cold case spanning a century and a half with a very present danger, building stakes that are both deeply personal and genuinely threatening.

Graham's real strength here is her ability to layer the past and present without losing narrative momentum. The Krewe of Hunters series has always balanced procedural tension with the quietly uncanny, and this seventeenth installment handles that balance with practiced confidence. The Colorado setting does real atmospheric work—its frontier history feels alive rather than decorative—while Scarlet and Diego's fractured dynamic gives the mystery an emotional undercurrent that keeps the pages turning long after the latest clue has been processed.