Blindman's Bluff by Faye Kellerman Book

A 3 A.M. phone call summons LAPD homicide detective Peter Decker to the well-fortified Coyote Ranch compound of billionaire developer Guy Kaffey. A grisly scene awaits: Kaffey and his wife dead, gunned down along with four employees. A philanthropist known for extending second chances to delinquents—many of whom he had hired for his personal security—the wealthy businessman died badly in what had to be an inside job. Perhaps even deeper inside than anyone imagines. At first the darkness enveloping this horrific multiple murder cannot touch Decker's wife, Rina Lazarus, who's serving on a jury in an L.A. courthouse. But a chance meeting and a request for help from a court translator is leading Rina straight into the heart of her husband's investigation—and directly into the path of relentless, cold-blooded killers.