Jim Hampton arrived in New Orleans, eager to escape the stress of quitting a lucrative law practice. Instead, he finds a city on edge as a tropical depression brews in the Gulf. The storm appears to be dredging up the odd and unusual like shells from the ocean floor. Shadowy figures appear in alleyways; mysterious voices seem to come from nowhere. Jim is skeptical of the locals' claims that these are warnings from victims of past storms. He had...