When I last left Miami P.I. Pete Fernandez, he was venturing “Down the Darkest Street.” Some time has passed and now I find him up to “Dangerous Ends.” His best friend Kathy Bentley has published not one but TWO best-selling true crime books based on his exploits, and so it’s no surprise when he’s contacted (and contracted) by Maya Varela, the daughter of a notorious murderer; she means to exonerate her father, who was convicted on relatively slim evidence for a murder that, Maya insists, he never committed.