Languedoc Books in Order

The Languedoc series is a trio of time-slip historical novels (Labyrinth, Sepulchre and Citadel) set in and around Carcassonne in south-west France. Each story links two different eras, weaving together ordinary lives, buried manuscripts and the long, often bloody history of the region.

In Labyrinth, the anchor points are July 2005 and the year 1209. Alice Tanner, a volunteer on an archaeological dig in the Pyrenees, stumbles into a hidden cave and finds two skeletons, an engraved labyrinth and a ring that seems to tug at her memory. Eight hundred years earlier, young Alaïs Pelletier du Mas is entrusted by her father with three mysterious books and a ring on the eve of the crusade against the Cathars. As Carcassonne comes under siege, Alaïs must decide how far she will go to keep their secret safe.

The novel moves back and forth between Alice and Alaïs, letting the reader see the same landscape occupied by crusaders, refugees and modern tourists in turn. Old city walls, mountain passes and half-remembered legends thread the timelines together, blurring the line between inherited memory and haunting.

Sepulchre stands alone yet echoes the first book. In 1891, Parisian teenager Léonie Vernier travels with her brother Anatole to their aunt’s remote estate near Rennes-les-Bains, a spa town in the foothills of the Pyrenees. There she discovers an abandoned chapel, a sinister Visigoth tomb and a unique tarot pack that seems to foretell violent events. In the present day, American musicologist Meredith Martin arrives in the same region to research a composer and instead finds herself drawn into Léonie’s story, the history of the cards and the darker side of the estate’s past.

The final volume, Citadel, shifts to the Second World War. In 1942 Nazi-occupied Carcassonne, nineteen-year-old Sandrine Vidal joins a women-led Resistance cell, code-named Citadel. By day they appear to be typists, students and daughters; by night they courier messages, shelter fugitives and organise sabotage. Their work brings them into contact with an ancient codex connected to the earlier books and with Audric Baillard, a quietly uncanny scholar who carries memories stretching back centuries.

Across the trilogy readers can expect adventure, siege scenes, secret libraries, ruined castles and a steady undercurrent of the supernatural. Mosse is less interested in puzzle-box twists than in how faith, fanaticism and loyalty play out in families over time, and she consistently puts women at the centre of the action. You can read each novel on its own, but taking them in order—Labyrinth first, then Sepulchre, then Citadel—lets the recurring characters, symbols and long shadows of the past build to full effect.