A Bullet for Cinderella — John D. MacDonald

Her veneer was big city ... But one look and you knew that Toni Raselle's instincts were straight out of the river shack she came from. I watched her as she toyed with the man, laughing, her tumbled hair like raw blue-black silk, her brown shoulders bare. Eyes deep-set, a girl with a gypsy look. So this was the girl I had risked my life to find. This was the girl who was going to lead me to a buried fortune in stolen loot.