Harry Potter and the Prisoner of Azkaban2004

Harry:
Tell me about Peter Pettigrew.

Lupin:
He was at school with us. We thought he was our friend.

Harry:
No. Pettigrew's dead. [to Sirius] You killed him!

Lupin:
No he didn't. I thought so too until you mention seeing Pettigrew on the map.

Harry:
The map was lying, then.

Sirius:
The map never lies! Pettigrew's alive! And he's [points to Scabbers] right there!

Ron:
Me?! He's mental!

Sirius:
Not you! You're rat!

Ron:
Scabbers has been in my family for...

Sirius:
Twelve years? Curiously long life for a common garden rat! He's missing a toe, isn't he?

Ron:
So what?!

Harry:
All they could find left of Pettigrew was his...

Sirius:
Finger! But then the dirty coward cut it off so that everyone would think he was dead! And then he transformed into a rat!

Harry:
Show me. [Sirius tries to take the rat from Ron, but Ron holds onto it] Give it to him, Ron.

Ron:
What are you trying do to him? [Sirius finally gets a hold of the rat] Scabbers! Leave him alone! [tries to run toward Sirius, but Hermione holds him back] Get off him! What are you doing? Scabbers!

[Sirius drops the rat, which runs while Sirius finally transforms it into Peter Pettigrew; he and Remus pull him out of the hole, Ron has a shocked look on his face]

Peter Pettigrew:
[realizes he's not a rat anymore] Remus? S-Sirius? My old friends! [runs toward the door, but Lupin and Sirius block him] Harry. Look at you. [walks toward Harry] You look so much like your father. Like James! We were the best of friends...

Sirius:
How dare you speak to Harry?! [Pettigrew scowls and runs away from Sirius] How dare you talk about James in front of him?!

Lupin:
You sold James and Lily to Voldemort, didn't you?!

Pettigrew:
I didn't mean to! The Dark Lord. You have no idea the weapons he possesses! Ask yourself, Sirius! What would you've done? What would you've done?

Sirius:
I would have died! [Pettigrew crawls under piano] I would have died rather than betray my friends!

Pettigrew:
[runs over to Harry, whispering to him] Harry, James wouldn't have wanted me killed! Your dad... your dad would have spared me! He would shown me mercy...!

[Lupin and Sirius yank him off Harry]

Sirius:
Should've realized, Peter, that if Voldemort didn't kill you, then we would! [he and Lupin pull out their wands and point them and Pettigrew] Together!

Harry:
No!

Lupin:
Harry, this man is...

Harry:
I know what he is. But we'll take him up to the castle.

Pettigrew:
Bless you, boy! Bless you!

[kneels to Harry]

Harry:
Get off! I said we'll take you to the castle. After that, the dementors can have you.