A Scottish castle turned bed-and-breakfast sounds charming—until guests start vanishing. FBI special agent Luke Kendrick recognizes the chilling pattern immediately. The evidence matches the work of the H. H. Holmes Society, a twisted network of killers honoring one of history’s most infamous murderers.
Disguised as tourists, Luke and fellow agent Carly MacDonald infiltrate Graystone Castle, where every hallway hides a secret and every locked door may conceal another victim. The deeper they explore, the more they realize the killers are already circling them.
With their covers fraying and the castle itself a labyrinth of danger, Luke and Carly have one chance to stop the bloodshed. But cutting the head off this snake means surviving the deadliest game of all, murder by design.
