Professor Dumbledore slumped in his chair, reading a report so long that it covered the entire desk and curled over the edge. He wished that his Phoenix, Fawkes, was here, but he had exploded into flames a few minutes earlier and vanished. Dumbledore sighed and returned to the report that Snape had compiled for the Order about Voldemort's planned actions for the next two weeks. There was a loud boom and Fawkes appeared in a whirl of flame and smoke. He dropped the charred note in his beak onto Dumbledore's lap.

Dear Professor Dumbledore,

I'm sorry to bother you at this time of night, but my god-brother found seven books in our backyard, all with titles starting with Harry Potter. They wouldn't open when we tried. There was also a note and a Time Turner telling me to write a letter to you, put it in the Time-Turner and spin it twenty-five times. Then, a Phoenix appeared, took the note and Time-Turner and vanished.

You must go to the Room of Requirement immediately. My god-father says that you know where it is. But first, you must gather the following people: Harry Potter, Ron Weasley, Hermione Granger, Draco Malfoy, all the Weasleys, Professor McGonagall, Professor Snape, Hagrid, Tonks, Remus Lupin, Sirius Black, Kingsley Shacklebolt, Dudley Dursley, Vernon Dursley and Petunia Dursley.

Yours sincerely,

T.R.L

Dumbledore blinked. He didn't know who this T.R.L person was, but he sounded serious and Dumbledore decided to take his words as truth, for better or for worse.