Dr. Kep Woodhead is a brilliant, irascible forensic toxicologist with a dark past.
Bernadette Becker is a disgraced federal investigator with one last chance.
They’re both assigned to a strange poisoning case: a graduate student has been found dead in a 15th-century chapel, overdosed on a controversial hallucinogen.
The list of suspects is long: the priest, the professor, the piscary president, the protestor, the protégé, and at least one wants to silence Becker.
Do Becker and Woodhead have a prayer of discovering the truth before the killer strikes again?