The other side of silence a novel of suspense

On his third day in Death Valley, Rick Fallon comes upon a deserted Toyota Camry, and soon thereafter, the almost-dead body of Casey Dunbar. Having rescued her, Fallon soon learns what had driven her to give up on life--and, his own life on hold, he resolves to unravel the twisted and dangerous strands of hers, a quest that leads him to the glitter-dome of Las Vegas.