Dr.
One person still trusts him to finish the job..
It has upended an investigation, destroyed his reputation, and left him to question his own sanity.
Until his exposure to a mind-altering pathogen knocks him off his game.
Theo Cray has a legendary mathematical knack for catching serial killers.
Dr.
Theo Cray is on the hunt for a killer nurse, and redemption, in a mind-bending psychological thriller by the Wall Street Journal bestselling author of The Naturalist .
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