Sixty-year-old Chicago police detective Abe Lieberman is having all the troubles he can handle when Estralda Valdez, a stunning Mexican prostitute, comes to him with a proposition he can't refuse: Estralda will help him with valuable information if he'll get a john off her back. But Lieberman's good intentions pave the way for a brutal murder. A murder that will lead Lieberman into the darkest depths of Chicago crime and corruption, and into the kind of trouble that could get him killed . . .