Plot to kill Peter Pettigrew

"Come out, come out, Peter! Come out, come out and play!"

- Sirius Black inside the Shrieking Shack in 1994

The plot to kill Peter Pettigrew took place during the Summer of 1993 and the Hogwarts 1993–1994 school year, in one of Sirius Black's last attempts to get revenge against Peter Pettigrew, a former friend. It began with the 12 years of planning in Azkaban (it is revealed that he kept sleep-talking). When he broke out of prison he began searching for hideouts nearer and nearer to Hogwarts, the closest being Dufftown (where he had been seen once by a Muggle woman. He finally broke into Hogwarts, trying to sneak into the Gryffindor Common Room, attacking the Fat Lady the first time, and later having to flee, due to having been seen by Ronald Weasley, when he was leaning over his bed. He later catches Ron by the leg, pulling him into the Whomping Willow into the Shrieking Shack in which Ron's rat Scabbers is revealed to be a betrayer named Peter Pettigrew and Sirius is proven unguilty to the Trio.

Murder of the Potters
In 1981 James and Lily Potter seeks into hiding with their baby son Harry, having avoided Lord Voldemort three times. They cast the Fidelius Charm at their home to protect themselves from Voldemort. They wanted to put Sirius Black as their Secret-Keeper, as requested by Hogwarts Headmaster Albus Dumbledore. However, Sirius requested his close friend Peter Pettigrew as the Keeper as Voldemort would not expect such a weak wizard like him would gain such a powerful position. However Peter had secretly began working for Voldemort months before, out of fear for his anger. He quickly ran off and told Voldemort about the Potters' hideout and Voldemort then quickly hunted them down and killed them. However when Voldemort turned on Harry, his curse rebounded and killed off Voldemort. Though the Dark Lord had fallen, Sirius' friends had too, and discovering a connection Sirius ran after Peter trying to revenge his friends.

Imprisonment of Sirius Black
Sirius Black had finally cornered up Peter Pettigrew, ready to revenge his friends. But at the final second, Pettigrew cast a powerful Blasting Curse, blowing up half the street and killing twelve innocent Muggles, cut off his finger and turned into a rat. Sirius was found by some Azkaban guards and followed peacefully, while laughing. Sirius was imprisoned in Azkaban for killing thirteen people, while Peter was awarded the Order of Merlin which was given to his mother along with the finger.

Planning inside Azkaban
"He's at Hogwarts. He's at Hogwarts."

- Sirius talking in his sleep

As the years went on he became more and more peaceful, even greeting the guards and others when they passed by. Early on in 1993 he began asking Cornelius Fudge, the Minister for Magic, about the daily newspaper, called the Daily Prophet, claiming he liked to do the Crosswords in the papers. However, he actually looked after traces for a special rat, who missed a toe. He finally found the rat on the shoulder of a thirteen year old red-haired boy on a photo from Egypt. He soon began mumbling while sleeping. And finally he broke out of Azkaban, turning into his Animagus-dog.

Moving around
After Sirius Black broke out, he has been on the move since then to avoid being re-captured. It soon became worldwide and "Have You Seen This Wizard?"-posters were soon hung up everywhere around the streets and shops etc. It was until he was seen by a Muggle woman in Dufftown, not far from Hogwarts, who immediately informed the Muggle enforcement, known as Crime Watchers, to search it. The Azkaban Security Officials and Very Important Wizards eventually got their ears into this and arrived at the place, however Sirius Black was gone at the time they arrived.

Sirius Black would later try to break into Hogwarts Castle to finish what he had started up, to find and kill Peter Pettigrew.

Appearances

 * Harry Potter and the Prisoner of Azkaban
 * Harry Potter and the Prisoner of Azkaban (film)
 * Harry Potter and the Prisoner of Azkaban (video game)
 * LEGO Harry Potter: Years 1-4