HOLD THE LINE

Some debts don't drown. They wait.Iris Mercer comes to the valley proud — the engineer hired to repair her great-grandfather's dam, the biggest thing three counties ever built. Then the reservoir drops to a level it hasn't seen in sixty years, the wall begins to weep grey water, and a man turns up drowned on dry stone inside the concrete, sealed in a locked room with a workman's handprint cooling ...