The Devil's Mambo — Jerry A. Rodriguez

"Have you ever wondered, Mister Esperanza, about the nature of evil...?"
Nicholas Esperanza couldn't believe his luck. A winning $30 million lotto ticket took him out of NYPD Homicide and bought him Sueño Latino, a popular salsa club on Manhattan's Upper West Side. Dancing, drinking, partying, women--every day was a good day. The nights with his girlfriend, Legs, are even hotter. But now, Legs needs Esperanza to do her a solid: find her missing 14-year-old niece, Alina. With that, Esperanza's luck is about to change.

Before he knows it, Esperanza's plunged into a dangerous sexual underground of S&M clubs, fetishists, pornography, and murder. Anything can be bought and sold, especially innocence. The most beautiful faces mask the most vicious predators. As the quest gets more personal, and the lines between good and evil blur, Esperanza spirals into the darkest recesses of his soul, to places he never wanted to see. He's in so deep that turning back is not an option.