Mathilde attends a wedding in a castle with her cousin Yves, the groom's, Cédric Perrin, best man. After the ceremony, the guests are invited to fly in a balloon; from above, some of them see the bride, Mélanie Verneil, and groom having an argument at the edge of the pool. Suddenly, she grabs a bottle of champagne and inflicts a blow to his head. He sinks into the water but Mélanie does not try to save him and flees. Lieutenant Lafarce informs the SR that Mélanie was a widow; her first husband, Alex, died in a fire.
—mgallegog