The nice men at P&O, are worried. A succession of jewelry thefts from the first-class passengers is hardly the best advertisement for their cruises. Phryne Fisher, with her Lulu bob, green  eyes, cupid's bow lips, and sense of the ends justifying the means, is just the person to mingle seamlessly with the upper classes and take on a case of theft on the high seas on a luxury cruise to New Zealand. She's carrying the Great Queen of Sapphires, the Maharani, as bait.There are shipboard romances, champagne cocktails, erotic photographers, jealous swains, mickey finns, jazz musicians, blackmail and attempted murder, all before the thieves find out....Kerry Greenwood is the author of more than 40 novels and six non-fiction books, and winner of the Ned Kelly Lifetime Achievement Award from the Crime Writers' Association of Australia.