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Still of Draco bleeding after being hit by Sectumsempra as Snape uses the counter curse

A violent curse used to injure or maim an opponent

Front page of the Half-Blood Prince's book

Property of the Half-Blood Prince

Blood spurted from Malfoy’s face and chest as though he had been slashed with an invisible sword.


Harry Potter and the Half-Blood Prince

By J.K. Rowling

Harry looking serious in his glasses from the Goblet of Fire

Harry Potter's worst decisions

The seven Potters leave Privet Drive

The final departure

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Sectumsempra was always a speciality of Snape’s. I wish I could say I’d paid him back in kind, but it was all I could do to keep George on the broom after he was injured, he was losing so much blood

Remus Lupin
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You see ... I’m holy. Holey, Fred, geddit?

George Weasley
Illustration of George Weasley from the second Order of the Phoenix infographic

George Weasley

Draco lying on the bathroom floor after Harry's curse

'For Enemies'

Sectumsempra fact file




'For Enemies'

The effect it has on the recipient

Slices and maims the target, as if they are being cut by an invisible sword. Injuries may be permanent

Famous moment a wizard or witch uses it

Harry uses it on Draco in Myrtle's bathroom. Snape hits George Weasley during an ambush, causing him to lose an ear