The Watersplash - Patricia Wentworth

First published in 1951 in the US by Lippincott. To the innocent visitor the picturesque village of Greenings would appear to be a haven of tranquility. But every place has its secrets and beneath the calm surface lurk hidden resentments and dangerous passions. When a man is found lying face down in a nearby watersplash, the verdict is death by misadventure. But Miss Silver happens to be in the neighbourhood and she suspects foul play...