Mr Campion's Farewell (Campion mysteries)

Strange things happen in the picture-postcard English village of Lindsay Carfax. When a young man falls into a quarry, it takes nine days to find the body. When rowdy hippies descend on the village, they’re given nine days to leave. When an outspoken schoolmaster is kidnapped for nine days, he stays eerily quiet after his release.
Now Albert Campion has come to town – and he means to investigate all this strangeness. But whoever is behind the unusual goings-on quickly makes it very clear that his nosing around is not welcome. Undeterred by threats, Campion is determined to expose the criminal masterminds hiding in this sleepy village.