Book 7 | Ch:13 - The Muggle-Born Registration Commission

SPOILERS:

Hermione accompanies Umbridge to court while Harry breaks into Umbridge’s office, to find Mad-Eye Moody’s eye mounted on her door. While inside he finds a file on Arthur Weasley and a copy of Rita Skeeter’s book on Dumbledore's life.

Harry retrieves the eye and heads back downstairs to the courtroom, where he and Hermione Stun the Ministry workers, take the Locket, and release the prisoners, advising them to go into hiding.

They collect Ron and attempt to return to Grimmauld Place, but must abandon that plan when they realize they’ve accidentally brought a Death Eater with them.