Snape's Grudge Against Lupin

Snape's deep-seated hatred for Lupin, rooted in their school days, and his attempts to expose Lupin as a werewolf.

increasingBearing stren­gth in each eventdecreasing

Snape's hostility

The Old Enmity The History Snape and Lupin were at Hogwarts together. Snape discovered that Lupin was a werewolf because of a prank by Sirius. He has never forgiven them. When Lupin is hired as Defense Against the Dark Arts teacher, Snape is furious. The Subtle Sabotage Snape constantly undermines Lupin. He makes comments about his teaching style, assigns homework on werewolves, and tries to catch him in a mistake. He also brews the Wolfsbane Potion for Lupin, but reluctantly. The Confrontation In the Shrieking Shack, Snape captures Lupin and Sirius. He disregards their explanations, wanting to take them to the Dementors. His hatred blinds him. He is only stopped by Harry, Ron, and Hermione disarming him.

Snape reveals Lupin's secret

The Revenge The Leak After being humiliated, Snape tells the Slytherins that Lupin is a werewolf. The news spreads quickly, forcing Lupin to resign. Snape achieves his goal of getting rid of Lupin. The Justification Snape believes he is justified in exposing Lupin, as he considers him dangerous. However, his actions are motivated by personal vengeance. He shows no remorse. The Fallout Lupin's departure is a loss for the school. Harry is angry with Snape but cannot do anything. The conflict between them continues, but Snape's grudge is temporarily satisfied.

Throughout the year

Morning after the Shrieking Shack