An amiable, mildly diverting outing for San Francisco private-eye Sharon McCone (Games to Keep the Dark Away, etc.)--now hired by Willy Whelan, a super-fence a.k.a. ""King of the Flea Markets,"" to find out why he's being followed by one Jerry Levin. Well, it seems that Levin is a con-man from way back, specializing in the theft and resale of Torahs; he's also involved with flea-market owner Mack Marchetti and suave Monty Adair, one of Willy's runners, in a fascistic group of so-called survivalists--who run a paramilitary camp on the acreage of an abandoned vineyard. And things get hectic when Levin is found shot dead in Willy's overstuffed garage, with the murder of Willy's cherished lady Alida soon to follow. Sharon works frantically to track down the killer; she's also trying to find Willy--who's out for revenge, sleuthing on his own; they find each other in time for a neatly executed escape. But, as usual, Muller's plotting lacks crispness and drive--with most of the appeal coming instead from the well-done San Francisco backgrounds.