(CNN) -- In "Black Diamond," best-selling author Martin Walker uncovers the trouble behind truffles. Before you crack open the pages of Walker's new novel, make sure and pour yourself a glass of red wine. Better have some cheese with a baguette close at hand too, because this book is deliciously good. The title, "Black Diamond" refers to France's highly-prized truffles of the same name. They're knobby, round, roughly the size of a golf ball and so sought-after that a pound will cost you several thousand dollars. Set in the south of France, specifically the Perigord region, this is Walker's third mystery featuring Bruno Courreges, chief of police in the sleepy town of St. Denis.
@highlight
"Black Diamond" refers to France's highly-prized truffles of the same name
@highlight
This is Walker's third mystery featuring chief of police Bruno Courreges
@highlight
The real allure of this novel are the author's enticing details of the south of France
CNN spoke to him recently from his home in @placeholder.
It's a key part of the unique charm of the @placeholder, and along with its food and wines, its warm and gentle climate, its enchanting landscape and lovely old stone buildings and friendly people, it adds up to a little corner of paradise and I love it dearly.
Read some of Chief Bruno's favorite recipes on @placeholder's website.