A man's body is found hanging from the top of a sailing ship mast during the Dunkirk carnival. Recently arrived from Paris, Captain Janie Roussel and lieutenant Éric Dampierre investigate.A man's body is found hanging from the top of a sailing ship mast during the Dunkirk carnival. Recently arrived from Paris, Captain Janie Roussel and lieutenant Éric Dampierre investigate.A man's body is found hanging from the top of a sailing ship mast during the Dunkirk carnival. Recently arrived from Paris, Captain Janie Roussel and lieutenant Éric Dampierre investigate.