Many years before, Bertuccio's brother was murdered by soldiers who belonged to the royalist party (the party that favored King Louis).
Bertuccio's brother was a soldier in Napoleon's army.
Bertuccio went to the city of Nîmes to seek justice for his brother's death, approaching Villefort (remember, he was kind of like a district attorney at the time), but Villefort was a royalist and sided with the murderers rather than the murdered.
Incensed by Villefort's coldness, Bertuccio swore to seek revenge on him.
Freaked out, Villefort leaves town in hopes of fleeing Bertuccio. He moved to Versailles.
Versailles is famous for many reasons, but Villefort liked it because it was the home of his mistress who lived in the very house that the Count has just bought.
One night, Bertuccio hid in the garden of Villefort's mistress's house, waiting to kill Villefort.
Villefort buried a box in the garden, and then Bertuccio stabbed him several times.
Bertuccio then dug up the box, expecting to find treasures beyond his wildest dreams.
But instead, he found a baby boy.
The baby was almost dead (it looked like he had been suffocated), but Bertuccio was able to help the boy start breathing again.
Bertuccio took the baby to a hospital where it stayed for a few months, and then Bertuccio brought the baby home.
Bertuccio and his sister-in-law named the baby boy Benedetto and took good care of him.
But Benedetto had a cold streak, and he disappeared when he was old enough to run away.
When Benedetto ran away, Bertuccio had been off smuggling.
One night, when the police were hot on his trail, Bertuccio hid behind Caderousse's inn (remember him?), and he saw something horrible happen.
A jeweler came to buy the diamond that the Edmond-disguised-as-Abbé-Busoni gave Caderousse and his wife.
The jeweler offered forty-five thousand francs for the diamond.
The jeweler was about to head for home, when a bad storm hit town, causing him to stay the night at the inn.