The door of the compartment slid open and the youngest redheaded boy came in.

“Anyone sitting there?” he asked, pointing at the seat opposite Harry. “Everywhere else is full.”

Harry shook his head and the boy sat down. He glanced at Harry and then looked quickly out of the window, pretending he hadn't looked. Harry saw he still had a black mark on his nose.

“Hey, Ron.”

The twins were back.

“Listen, we're going down the middle of the train — Lee Jordan's got a giant tarantula down there.”

“Right,” mumbled Ron.

“Harry,” said the other twin, “did we introduce ourselves? Fred and George Weasley. And this is Ron, our brother. See you later, then.”

“Bye,” said Harry and Ron. The twins slid the compartment door shut behind them.

“Are you really Harry Potter?” Ron blurted out.

Harry nodded.

“Oh — well, I thought it might be one of Fred and George's jokes,” said Ron. “And have you really got — you know…”He pointed at Harry's forehead.

Harry pulled back his bangs to show the lightning scar. Ron stared.