On Wednesday morning, Commissioner Maigret received a letter from his former colleague from the criminal police, who retired two years ago and settled in the Dordogne. “...If you are carried by a fair wind to our region, be sure to come and see me for a few days...”. And the boss asked, on occasion, to visit the city archive of Bordeaux... At six o’clock in the evening, with a first-class ticket to Villefranche, Commissioner Maigret boarded the train at Orsay station. The commissioner had no idea that a routine trip would turn into an investigation into a strange and confusing crime...