The Shrieking Shack and the Tower

[steven1965aaa]

No: HPFGUIDX 155193

I guess this has been covered already (what hasn't!) but in re-
reading POA recently I was struck by the similarities between the 
scene in the Shrieking Shack and the scene on the Tower in HBP.  For 
example:

1. Harry pointing wand at Sirius, hesitating and ultimately deciding 
not to attempt to kill, like Draco in HBP.
2. Sound of someone coming up the stairs.
3. Lupin bursts into room his eyes sweeping over the scene, very 
much like Snape in HBP.
4. Use of expelliarmus (sorry about the spelling).
5. Snape uses invisibility cloak.
6. Werewolves in both scenes.
7. I think (please help me on this) there are 7 people in each scene 
(The Trio, Lupin, Sirius, Pettigrew, Snape = 7); (Harry, Dumbledore, 
Draco, Snape, Greyback and the brother and sister death eater = 7)
8. Sirius has look of hate and revulsion at Pettigrew, like Snape's 
look in HBP during AK.
9. People immobilized in both scenes (different method of course).
10. Snape's rant at Harry in the Shrieking Shack where he references 
James closely mirrors in ALL CAPS his rant at Harry in the Flight of 
the Prince where he references "your filty father".