A crisp clean softcover, no markings throughout:nBarnaby Gaitlin is one of Anne Tyler's most promising unpromising characters. At 30, he has yet to graduate from college, is already divorced, and is used to defeat. His mother thrives on reminding him of his adolescent delinquency and debt to his family, and even his daughter is fed up with his fecklessness. Still, attuned as he is to "the normal quota for misfortune," Barney is one of the star employees of Baltimore's Rent-a-Back, Inc., which pays him an hourly wage to help old people (and one young agoraphobe) run errands and sort out their basements and attics. Anne Tyler makes you admire most of these mothball eccentrics (though they're far from idealized) and hope that they can stave off nursing homes and death. There is, for example, "the unstoppable little black grandma whose children phoned us on an emergency basis whenever she threatened to overdo." And then there's Barnaby's new girlfriend's aunt, who will eventually accuse him of theft--"Over her forearm she carried a Yorkshire terrier, neatly folded like a waiter's napkin. 'This is my doorbell,' she said, thrusting him toward me. 'I'd never have known you were out here if not for Tatters.'"