A sinister fire in a bookshop reveals a murderous plot to steal a Bible that belonged to Charles Darwin- and Commander Gray Pierce is thrown headlong into a mystery dating back to Nazi Germany. Meanwhile. Lisa Cumming is investigating an atrocity in a monastery gripped by madness when she is targeted by an assassin. Her only ally is an undercover SIGMA force agent ... Pierce's investigations lead him to an abandoned laboratory with a horrific secret- and a centuries-old plot that threatens to alter the destiny of mankind ...