The Dancing Druids

The Dancing Druids is a 1948 mystery detective novel by the British writer Gladys Mitchell. It is the twenty-first in her long-running series featuring the psychoanalyst and amateur detective Mrs. Bradley. The title refers to a group of prehistoric stones whose appearance resembles dancing druids.

Synopsis
In the West Country a cross country runner stumbles across a mysterious scene, and calls in Mrs. Bradley who arrives with her various assistants.