There's trouble in Paradise, and the Rowling family is on the case.The island wedding of Mandy's BFF Fiona and famous exorcist Brian Powers becomes the backdrop for a murder investigation when the body of a notorious loan shark is found in the dunes. But how did a man drown so far from the water?An angry mermaid threatens to wreak havoc if the killer isn't caught, but with no spirits to question, does Mandy stand a ghost of a chance to solve the case?Find out in this wet and wild 20th installment of the Manhattan Mystery Series.