Forget Deadwood, Dodge, and Tombstone, the biggest, baddest boomtown of the 1880s was San Diego, California. The attraction wasn't gold or silver but cheap land, the promise of an oceanfront paradise where it never snows and rarely rains, and the too-good-to-be-true deals offered by local real estate merchants. In the wake of bona fide settlers came the hucksters, con artists, and snake oil vendors--so many flimflam men (and women) that those duped...