HIDDEN RICHES In Hidden Riches, Nora Roberts unveils the intriguing world of antiques dealing, where a independent woman discovers the price of breathless desire--and the schemes of an obsessed killer.    Dora Conroy has a passion for antiques”and any other rarities she can acquire for her quaint Philadelphia shop. A seasoned dealer, she knows all the tricks of the trade. But she is unprepared for the deadly consequences when she purchases a few curiosities at an auction”and unknowingly brings home a priceless cache that makes her the target of an international criminal. Entwined in a reckless chase, Dora turns to her new neighbor, Jed Skimmerhorn, a cop who™s turned in his badge”and whose desire for lovely Dora puts him back in the line of fire. Fighting their attraction while falling in love, they find that hidden riches can have a most ordinary fa§ade. And that possession can be a lethal obsession¦