Murder Has No Calories — Corinne Holt Sawyer

When a beautiful staff member at a California fat farm is found brutally murdered, the owner pleads with the plucky senior sleuths from Camden-sur-Mer to investigate. So Angela Benbow and Caledonia Wingate quickly join the edgy little party at The Time-Out Inn to check out their fellow guests: grumpy Marceline, face-lifted Carmen, dimpled Cracker, saggy Judy, and roly-poly Tilly, among others. Very nice ladies, too--on the surface.

But beneath one of those mud-packs lurks a killer. Too had that Angela's and Caledonia's impulsive sleuthing is pushing them toward a fate worse than aerobics. Namely death...