After solving a challenging case, one that thoroughly questioned her instincts, it's not long before Detective Eliza Sheppard and her team are pulled back into the streets. Another murder, this time taking place in the Historic District of Savannah. The evidence is collected, the suspects are questioned, but still, something is not adding up. When the results of the autopsy are revealed, Eliza recognizes that she's dealing with something unlike anything the Savannah PD has ever experienced. The streets of Savannah are filled with thousands of possible suspects, roaming free, living in society among the rest of humanity. Eliza and her team of detectives are on the hunt for someone and they've got a lead on a person whose basic human nature is in question.