Dead Water by Ngaio Marsh

In this gripping mystery, the serene island of Portcarrow becomes the backdrop for a chilling murder investigation when a local woman, known for her healing powers, is found dead. As Inspector Roderick Alleyn delves into the island's secrets, he uncovers a web of jealousy, superstition, and hidden motives among the eccentric residents. With the picturesque setting contrasting the dark undercurrents of human nature, the detective must unravel the truth before the island's tranquility is shattered forever.