Calico by Lee Goldberg

From #1 New York Times bestselling author Lee Goldberg, comes an explosive, page-turning investigative thriller - with a mind-blowing twist.
There's a saying in Barstow, California, a decaying city in the scorching Mojave desert . . .
The Interstate here only goes in one direction: Away.
But it's the only place where ex-LAPD detective Beth McDade, after a staggering fall from grace, could get another badge . . . and a shot at redemption.
Over a century ago, and just a few miles further into the bleak landscape, a desperate stranger ended up in Calico, a struggling mining town, also hoping for a second chance.
His fate, all those years ago, and hers today are linked when Beth investigates an old skeleton dug up in a shallow, sandy grave . . . and also tries to identity a vagrant run-over by a distracted motorhome driver during a lightning storm.
Every disturbing clue she finds, every shocking discovery she makes, force Beth to confront her own troubled past . . . and a past that's not her own . . . until it all smashes together in a revelation that could change the world.