In the latest installment of the bestselling series, Commissaire Dupin is called to the northern coast of Brittany where a crime fiction festival and a murder shakes the town of Roscoff.
While enjoying a meal, Dupin learns that a young woman has been stabbed. The town is already in chaos due to protests by ferry employees and mysterious activities within the "Brotherhood for the Protection of the Roscoff Onion." As threatening slogans appear on walls, Dupin realizes this case is more dangerous than any before, leading him deep into the local culture and conflicts.
