My theory on Priori Incantatem

[Kelley]

No: HPFGUIDX 1667

Okay, here goes--

I think Vold went to kill Harry, not specifically James and Lily, 
probably due to Trelawney's first correct prediction.  J & L were 
killed as a by-product of V wanting to kill H.  They of course tried 
to protect him, so they needed to be eliminated.  I think James was 
cursed by Vold first, but he was able to fend it off, the way Harry 
is able to throw off the Imperius curse, (and perhaps AK, at least 
the first time).  Vold, unaware that James still lived, went on to 
kill Lily, who was trying to protect Harry.  I'm supposing that Lily 
was killed and Vold then throws the curse to kill Harry.  At the same 
time, James throws his own curse.  The two curses colliding(?) are 
what destroys the house.  The house falling in kills James.(?)  So, 
the first curse Vold throws at James doesn't kill him, the curse he 
throws at Lily does kill her, then James is killed by the next 
curse.  So, James is cursed again after Lily (the curse to kill 
Harry) therefore he would come out of the wand before Lily.  I 
believe Lily, who was so good at charms, placed some sort of 
protective/love/"good" charm on Harry, maybe having something to do 
with blood like someone said.  Perhaps this protected Harry, both 
from Vold's curse and the falling house.  This is also what gave 
Harry protection in SS so Vold/Quirrell couldn't touch him, and why 
Vold wanted Harry's blood in GoF.  If James could throw curses the 
way Harry can, this could explain why Moody/Crouch brings up the 
unforgivable curses in the first place.  He wanted to see how they 
affected Harry, at least the Imperius, he obviously couldn't try the 
other two without making Dumble suspicious.  Perhaps he wanted to 
learn if Harry could throw the curses, which could explain why Vold 
still hasn't managed to kill Harry.  Vold still doesn't know all the 
reasons he can't kill Harry.  Crouch Jr. wanted to help discover 
these reasons.   

Okay, I think that's it...tell me what you guys think.

Kelley