SIRIUS is standing by the Whomping Willow, after the execution of BUCKBEAK.
SIRIUS: I'm gonna get my revenge tonight
My old friend Peter will be dead tonight
I thought he was at Hogwarts and I was right
And now he's in Ron's pocket; I'll give him a fright!
He turns into a dog, grabs RON by the leg, and runs into the Whomping Willow. HARRY and HERMIONE run after him. Meanwhile, LUPIN is sitting in his office, examining the Marauders' Map…
LUPIN: Why is the dot with Peter here, in sight?
I thought that Sirius has killed him that night
And there's another dot there: Sirius Black
So, all along Peter was really Ron's rat
I'm there!
He runs out of the office.
RON: Oh, guys, that Grim has really got me now
Trelawney was right all along; that Grim is definitely an omen of death
I'm bleeding so much; it's my end now
That Grim will surely finish me off…
Tonight!
PETER: Oh, rats, I'm really busted now, tonight
Oh, Sirius, don't kill me please, tonight
I've got to escape, but how?
And Sirius knows I'm guilty; he'll kill me right now!
Tonight!
Meanwhile, HAGRID is standing outside of his hut…HAGRID: Tonight, tonight my hippogriff has died
It was so sad to say goodbye
Tonight, tonight Macnair has arrived
He chopped off Beaky's head and he died
Today was our last day together
I thought that he'd be with me
Until the day I died
And now, because of stupid Malfoy, Beaky was killed…
ALL: Tonight!