"A historic cruise ship, a haunted ship, the Celtic American Line's Destiny sets sail from the Port of New Orleans - with a killer on board. He's known as the Archangel because of the way he displays his victims in churches. And the way he places a different saint's medallion on each one. No one knows exactly who he is or why he's doing this. Jackson Crow - head of the FBI's Krewe of Hunters, a special unit of paranormal investigators - is assigned...

A ritualistic murder on the side of a remote road brings in the Florida state police. Special Agent Amy Larson has never seen worse, and there are indications that this killing could be just the beginning. The crime draws the attention of the FBI in the form of Special Agent Hunter Forrest, a man with insider knowledge of how violent cults operate, and a man who might never be able to escape his own past.