The anonymous caller has an ominous tone and an unnerving message about something "real dead ... buried in your marsh." The eco-volunteer on the other end of the phone thinks it's a prank, but when a young woman's body turns up in L.A.'s Bird Marsh preserve no one's laughing. And when the bones of more victims surface, homicide detective Milo Sturgis realizes the city's under siege to an insidious killer.

Now the incomparable team of psychologist Alex Delaware and homicide cop Milo Sturgis embark on their most dangerous excursion yet, into the dark places where risk runs high and blood runs cold. It's a story tailor-made for the nightly news: Dylan Meserve and Michaela Brand, young lovers and fellow acting students, vanish on the way home from a rehearsal. Three days later, the two of them are found in the remote mountains of Malibu, battered and terrified...