Death on the Dragon's Tongue (Penny Spring and Sir Toby Glendower Mysteries)

The French government plans to locate a nuclear reactor on the site of a prehistoric burial monument on the Brittany Coast. Plans are interrupted when an official is murdered--in circumstances that bear unmistakable signs of witchcraft.

Professor Toby Glendower halts an archaeological dig when the body of a recent murder victim is discovered, but Toby's kidnapping necessitates Penny Spring, his colleague, finishing the investigation.