The clue he received in the film was from Bellatrix, who was in a frantic frenzy when she thought her vault was broken into. He is ultimately able to identify the cup as a
Rereading the 7th and it's been focused on the locket, ring, diary and Nagini....then all of a sudden they know to look for the cup. He knew it in HBP after Dumbledore and Harry go into Hokey's memory and see Riddle visiting. She showed him the locket and the cup and Riddle stole both.
Harry Potter and the Deathly Hallows
In this book, Rowling reveals that Bellatrix is the guardian of Helga Hufflepuff's cup (though she is unaware that it is a Horcrux), which Voldemort has entrusted the Lestranges to keep in their Gringotts vault.
Helga Hufflepuff's Cup was stolen from Hepzibah Smith by Lord Voldemort and used to create one of his six true Horcruxes. He gave the cup to Bellatrix Lestrange for safekeeping within her Gringotts vault.
In Harry Potter and the Deathly Hallows, the Trio, with the help of Griphook, execute a plan to break in to the Gringotts vault of Bellatrix Lestrange's family to steal a Horcrux belonging to Voldemort.
Cruciatus Curse ('Crucio')
Harry tried to use this spell himself. The first time was against Bellatrix after she had killed Sirius. His attempt was unsuccessful because, as Bellatrix mockingly explained: 'You need to really want to cause pain – to enjoy it – righteous anger won't hurt me for long…'
Why doesn t Harry use Avada Kedavra on Bellatrix? Harry didn't use that spell because he cannot bring himself to kill anyone. He is not a killer.
This replica was placed in the case normally holding the real sword, so that the real one could eventually be given to Harry Potter to assist his search for Voldemort's Horcruxes. The replica made its way in time into Bellatrix Lestrange's vault at Gringotts Wizarding Bank.
The spell could also could be used as a curse using the incantation Gemino, known as the the Gemino Curse, where an object when touched would replicate ad infinitum, filling a space and crushing any intruder or trespasser under the weight of replicated items - this precaution was placed on the treasure in Bellatrix ...
Bellatrix used a powerful "love potion" on Voldemort and they have sex while he is temporarily obsessed with her. She then uses obliviate on him while he sleeps (you know, he falls asleep after his post-sex cigarette) and tells everyone that the baby is her and her husband's.
Draco had several reasons for lying to Bellatrix, including the fact that he was never a bad person. Moreover, he no longer found working for the Dark Lord appealing and hated how Voldemort treated his family. He did not intend to harm anyone and believed Harry was the only person capable of defeating Voldemort.
Nagini was Lord Voldemort's final Horcrux
Nagini was not only the last Horcrux to be killed, but also the last Horcrux to be created. In an interview, J.K. Rowling revealed that it was the murder of Bertha Jorkins that made Nagini a Horcrux.
Voldemort wasn't aware of Harry being a pseudo-horcrux because he didn't plan it, and Harry didn't know either until Voldemort “killed” him, but he actually killed the piece of soul kept in him.
So when Ron said three, it wasn't a mistake. He meant there were three more horcruxes to destroy before being able to destroy the fourth and final piece which was in fact Voldemort himself.
12. Snape's Last Words. In the [Deathly Hallows] book, Snape's dying words to Harry were "Look at me". Right then we did not realize the significance of his words but in the very next chapter when Harry goes through Snape's memories in the Pensieve, he comes to know how much Snape loved Lily.
Riddle, or Lord Voldemort as he called himself at that point, transformed the cup into his fourth Horcrux, using Smith's murder as the tool. Many years later he left it in the care of his trusted Death Eater, Bellatrix Lestrange.
The author explicitly states that both women were fighting to kill, despite Molly refraining from casting the Unforgivable curse Avada Kedavra. The result of the duel actually comes about as a result of nothing more than spectacular accuracy on Weasley's part.
Because to a pureblood fanatic like Bellatrix, Harry is a Mudblood because one of his parents (Lily Evans) was a Muggleborn. Anyone with Muggle ancestry is one, including Snape since his father was a Muggle (Tobias).
However, Harry felt no pain because the wand Voldemort used, the Elder Wand, refused to harm its true master, though Harry's body was still tossed around by the force of the spell.
Because they knew her wand had been stollen. If they showed it, it would have been proof that they weren't her.
In the book, it's primarily because: Hermione didn't disapparate with Harry and Dobby from Malfoy manner. So it's possible she wasn't close by them. Ron apparated with her based on the description of the scene and not knowing Dobby's injury, he probably took her right back to Shell Cottage without thinking.
The cup, which was made a Horcrux with Hepzibah's death, was left with Bellatrix Lestrange who kept it at Gringotts. Griphook and an Imperiused Bogrod helped Harry, Ron and Hermione break into Bellatrix's vault and recover the Horcrux. The cup was destroyed by Hermione Granger, using a fang from the Basilisk's corpse.
His reaction to Bella's death was akin to his reaction at the loss of the Cup, which was when he realised that his own immortality was jeopardised amidst war and his own death could have been near.
Voldemort's attempts to trick Harry into killing Bellatrix would have done far more harm than good to his sinister cause, as Harry killing Bellatrix might have resulted in dire consequences for him, but he'd remain one of Voldemort's greatest threats and the Dark Wizard would be missing his most trusted lieutenant.
The darkest of the Dark Arts, Harry Potter unforgivable curses are the Cruciatus Curse, the Imperius Curse, and the Killing Curse. Although the curses are highly illegal, Harry using Unforgivable Curses happened, but he uses them once he was thrust into the Second Wizarding War.