Labyrinth is an archaeological mystery English-language novel written by Kate Mosse set both in the Middle Ages and present-day France.

The novel relies heavily on historical events such as the massacre at Béziers and the Crusade against the Cathars in Occitania, now the South of France, from around 1200.

When Dr Alice Tanner, who works as a volunteer at the archaeological site of Pic de Soularac, in France, discovers two skeletons in a long-hidden cave in the hillside, she unearths a link with a horrific and brutal past.

However, it is not just the sight of the shattered bones that makes her uneasy; there is an overwhelming sense of evil in the tomb that Alice finds hard to shake off, even in the bright French sunshine.

Eight hundred years ago, on the night before a brutal civil war ripped apart Languedoc, three books were entrusted to Alaïs, a young herbalist and healer, the daughter of the steward of Carcassona.