Killing Cassidy

In the solid style of the best British cozies, this sixth offering in the Dorothy Martin series moves across the Atlantic to the rolling hill country of southern Indiana. Sixtyish Dorothy and her second husband, Alan Nesbitt (former chief constable of Belleshire, England), receive word that she's been bequeathed $5,000 by Dr. Kevin Cassidy, a dear friend from her hometown of Hillsburg, Ind. There's a catch, though. To inherit, she must find the doctor's presumed murderer. Since Cassidy died of pneumonia, there are no cast-off shell casings or bloody stilettos around to point to the guilty party. How was Cassidy done in? And by whom? Was it Jerry, the crazy coot in the ramshackle trailer next door to Cassidy? Or Reverend Bussey, the blustering preacher whose finances have risen as those of his parishioners have fallen? Or Mary Alice Harrison, the impoverished niece, who expected to be named in Cassidy's willDbut wasn't? Cassidy made loans to them all, depleting his fortune. Dorothy and Alan must untangle a snarled skein of Medicaid rules, IRS regulations and human foibles to unearth the truth in this skillfully plotted story with retirement-age sleuths. Although cloying at times, Dams writes with a good ear for Midwestern dialogue and develops her characters lovingly. Altogether, this is a warm and worthy read that should generate a lot of interest in Madison, Ind., the model for the fictional Hillsburg, as well as in similar Midwestern venues. Mystery Guild alternate selection. (Dec.)