dog Watson after his faithful companion, and trained him to sniff out clues and follow trails. So far, Dilly and Watson haven't cracked many cases - beyond lost cats, or missing biscuits that turned out to have been eaten all along. But now the detective duo find themselves on a luxury ocean liner bound for London. A thousand passengers. A thousand miles of ocean around them. It's the perfect place for a murder ... Or two. Or three. Or four. Or MORE!