The locked room contains Karma

[arielock2001]

No: HPFGUIDX 95651

Arianna:

It *is* an old witchy belief that everything you do comes back to 
you three fold... 

Lily did defy Voldy three times...

Harry seems to have a knack for deflecting curses and jinxes 
aimed at him...

Many religions believe that a person is rewarded or punished for 
his deeds in the afterlife.  The truth, realization and payback for 
you behavior (good or bad) could be more wonderful or more 
terrible than death.  

Karma would fit as an Ancient Magic similar to live debts.

Karma could be the Ancient Magic that Voldemort detests 
because... 
...The existence of  Karma would prove that there is a difference 
between right and wrong.   It would prove that the lesson 
Voldemort taught Quirrell was wrong: "there is no good and evil, 
there is only power, and those too weak to seek it." (SS 291)   
Nope.  Sorry, Voldemort, not if there is Karma...

It could all add up..

Arianna