DISCLAIMER: I don't own Harry Potter!

Dumbledore informs Harry when Voldemort used Nagani to kill an old man, that's when he decided to make her his last horcrux.

Everyone looked at Harry confused. Sighing, Harry quickly explained the dream he had of Voldemort and Crouch before 4th year started.

"So killing the man gave him the opportunity to make that snake into a horcrux." Bill stated. "Incredible he could do it without a body."

"Well Dumbledore wasn't specific when he turned her into one," Hermione said logically. "So maybe he did it after he returned to his body."