"You dare use my own spells against me, Potter? It was I who invented them - I, the Half-Blood Prince!" -- Severus Snape
Snape, Malfoy and the Death Eaters flee, and Harry gives chase. He runs through a raging battle involving the Order and tries unsuccessfully to curse Snape. Snape reveals that he is the Half-Blood Prince. Hagrid’s hut is set ablaze and the Death Eaters escape. Harry and Hagrid then put out the fire, see students all over the grounds, and find Dumbledore’s body. Harry discovers that the locket was not a real Horcrux, but a replacement put there by the person who took the real one: R.A.B.
Calendar and Dates
The entire chapter takes place the same night as the previous chapter.
Exceptional character moments
Snape reveals that he is the Half-Blood Prince and he created Levicorpus and Sectumsempra.
"DON'T -" screamed Snape, and his face was suddenly demented, inhuman, as though he was in as much pain as the yelping, howling dog stuck in the burning house behind them - "CALL ME COWARD!"