Harry Potter and the Dealthy Hallows is the seventh and final book in J.K. Rowlings Harry Potter series. Voldemort is continuing to accumulate power and it is up to Harry, Ron, and Hermoine to find the remaining Horcruxes to defeat him once and for all. When the Death Eaters descend upon Hogwarts, it leads to a battle that will affect the future of the wizarding world forever.
Hermione does not forgive Ron overnight for leaving them, but Harry is thrilled to have him back. He’s also excited that they managed to destroy another Horcrux, and he’s feeling much better about their progress.
Ron also fills him in that there’s been a Taboo placed on Voldemort’s name. Whoever says his name instantly gets marked by Death Eaters, which is why they’ve been able to find Harry so easily in the past.
One night Hermione announces that she wants to go see Xeno Lovegood, Luna’s father and editor of The Quibbler . He was wearing Grindewald’s sign at Bill and Fleur’s wedding, and Hermione is becoming convinced that the symbol is important somehow. She wants to ask him about it.
When they get to the Lovegoods' house, they talk Mr. Lovegood into helping them out. He leaves for a moment to go fetch Luna, and comes back, offering them a drink. He tells them that the symbol he wore to the wedding is really the sign of the Deathly Hallows.