[Manhattan]

I think it was limbo, because there was a third person there...if he had just been unconscious that little boy wouldn't have been there.

With the Sirius/Bellatrix curse thing I think it is a different cursefrom the killing curse. One that would do damage to you, but if directed properly it would kill you. For example maybe it paralyzes which body part is hit, then if you aim for the heart it'd stop beating.