Continuing where Harry left off, in the epilogue...

...all of a sudden, a strange burning flashed through his head.

"What?" he muttered. His wife, Ginny, looked at him curiously.

 "No. It's impossible. It can't be." said Harry.

"What?" asked Ginny.

"He's returned, Ginny. Voldemort's back." said Harry.

He watched as the Hogwarts Express, carrying two of his children and his neice and nephew to school.

"But...you killed him. Right? Nineteen years ago." Said Ginny, puzzled.

"I don't know. We have to tell people. Neville. Hagrid. They can keep the kids safe at Hogwarts, right?" responded Harry.

Ron and Hermione walked over to them.

"Hello, Har-" Ron broke off, seeing their concerned faces. "What's wrong?"

"He's back, Ron. Voldemort's returned." said Harry.

His daughter, Lily, looked at him fearfully. He looked over at Draco, and saw that he was clutching his arm and looking back at Harry.

"How- how can you tell? Is it your scar?" Asked Hermione.

"Yeah. But how?" wondered Harry, "I thought I'd killed him. He's angry. He wants revenge. But still, he's weakened."

"Dad? Mum? What's going on?" Asked Lily, her voice trembling.

"Lily...you're much too young to understand." Said Harry to his youngest daughter.

"Not much younger than you were when you found out...you know, the first time." reminded Hermione.

"True..." mused  Harry, "Lily, do you remember the stories I've told you about the dark wizard by the name of Voldemort?"

"Yes."

"Well, he's...he's back. We must get to the school now. Accio broomsticks!"

He waved his wand, and five brooms zoomed into the room.

"We will need to fly to Hogwarts. Let's go."

They mounted the brooms and flew off ahead of the train.