Ghost Country

Sara Paretsky boldly strays from her widely popular V.I. Warshawski mystery series--note to fans: caveat emptor--and trades the gritty Chicago detective in for a pair of debutante sisters, Mara and Harriet Stonds. The poor little rich girls (grand pa-pa Stonds was a famous neurosurgeon) are blessed with every material comfort, but are sadly lacking in a sound karma-credit plan. Treated like a second-class citizen by her grandfather, Mara forever plays the underdog to ''golden'' Harriet, an irritatingly perfect girl, reminiscent of ''Nellie'' from Little House on the Prairie . In a bizarre chain of events, the sisters see the errors of their ways when they become entangled in a complex caper involving a washed-up, drunken opera singer, a posse of homeless women, a soothsayer, a kindly psychotherapist and a selection of twisted clergymen. Abstract and slightly surreal at times, Ghost Country might seem arduous to the tried and true Paretsky fan: it's a far cry from her no-nonsense, cut-and-dried thrillers. However, this atypical character study might prove to be a refreshing pit stop for those with a lot of mystery mileage under their belts; it's a colorful detour from the predictable puzzlers.