When FBI special agent Luke Kendrick discovers chilling evidence of dozens of victims at a crime scene in London, he recognizes the calling card of the notorious H. H. Holmes Society. Named for the eighteenth-century monster regarded as America’s first serial killer, the society is comprised of a twisted web of killers, working to carry out heinous murders in Holmes’s memory. And now the group’s been linked to a Scottish castle turned B and B—where guests check in but never check out.

Scotland has a dead body problem. Another one. And in the wake of a similar spate of tribute killings, Special Agents Luke Kendrick and Carly MacDonald know they have their work cut out for them. Working alongside a new team of agents, the partners have more questions than answers when the crime scenes yield little evidence. In the style of infamous killers Burke and Hare, it appears victims are being moved to a secondary location, where they’re dissected and sold for spare parts.

During a vicious heat wave, a county maintenance worker stumbles upon two suspicious suitcases abandoned by the side of the road. Sheriff Bree Taggert responds to find two bodies stuffed inside the luggage. The press demands action. The community is on edge. Suddenly, Bree is at the center of a media firestorm. In Oregon, a senator’s daughter goes missing. FBI Special Agent Mercy Kilpatrick agrees to keep the politically sensitive case on the down-low.

Deep in the Florida Everglades, the body of a woman is discovered in pieces, presumably ravaged by an alligator. Upon closer inspection, it’s determined no animal could make such perfectly precise cuts. Only a blade could do that. Wielded by a human. Soon, dozens of oil drums emerge amid the river of grass. Each one packed to the brim with body parts.

It was one dark night that brought Damon Wolfe and Sophie Parker together. They were two tortured souls, looking for escape, and they weren't supposed to see each other ever again...Four years later, Sophie's FBI father, who is also Damon's mentor, is killed in a suspicious car crash after leaving Sophie a cryptic message to trust no one from the agency. When Damon shows up looking for her, she isn't sure if he's friend or enemy, but she knows he could easily rip apart what is left of her heart.