Thorndike Press large print thriller.

Subtitle from cover

Caitlin Hendrix, a detective with San Francisco's Narcotics Task Force, visits a crime scene in an Alameda County cornfield-a brutal double murder. The killer pounded nails into the chests of the two victims, forming the symbol for mercury, the hallmark of the notorious serial killer known as the Prophet who struck the Bay Area during the 1990s, then disappeared. The Prophet is no stranger to Caitlin: her father, Mack Hendrix, was the lead detective on the original case, which left him an emotional wreck and tore his family apart