The Vendetta pT 1 Bertuccio explains that years ago, his brother, who had been a soldier in Napoleon's army, was murdered by royalist assassins in the city of Nîmes. Seeking justice, Bertuccio visited the public prosecutor of Nîmes, who at the time was Gérard de Villefort. Villefort, a royalist, was unsympathetic to Bertuccio's story and coolly turned him away. Bertuccio swore revenge on the public prosecutor.

Terrified for his life, Villefort transferred to Versailles, but Bertuccio followed him there. Bertuccio soon discovered that Villefort often came to visit the summerhouse in Auteuil, where he kept his mistress, a widowed baroness. One night, Bertuccio lay in wait for Villefort in the small garden behind the house and stabbed him, leaving him for dead. Villefort had just finished burying a box when Bertuccio pounced on him and grabbed the box, thinking that it contained a treasure. Instead, he found a baby, which had been smothered but started breathing after being given mouth-to-mouth resuscitation.