Ruth Ecklund-seventy-something and settled in life-enjoys a peaceful, predictable routine...until the day she sees a man standing across the street next to a yellow Cadillac. And suddenly, her world turns upside down. But is it really him? Is he really Elvis-with whom she had a brief romantic encounter as a teen, and who's been dead for years? Or is he Bobby Wayne Pugh, an Elvis impersonator on the run from Las Vegas hit men? Only the Red Moon knows the answer but to find it Ruth must survive an unsettling journey into the memories of her past, a madcap jaunt across Florida, and a wild ride into the imagination of the stranger with the yellow Cadillac.