I wish that BDI would be eliminated as a theory, once and for all.
Nothing supports it - not evidence, not common sense.
There is no motive.
On the other hand, the parents are statistically most likely to have hurt their child.
I feel the torch was out because JB was taken to the basement as a punishment, and the lights kept off intentionally.
I think that the blow to the head was made in the basement by the torch, and probably by PR, when JB wouldn't shut up. She'd already been molested and was hysterically over tired and rebellious this time.
The basement in the dark was part of the ritual/torture/punishment thing PR had going on.
PR belted her one across the head, went back upstairs, maybe put BR to bed (or he was already there) then wandered up to inform John of the big oopsy.
:moo:
Unfortunately, BR CANNOT be eliminated as a suspect. He WAS present in the house at the time of the crime. As in any unsolved murder, NO ONE can who was present at the time of the murder can be eliminated UNTIL and UNLESS the killer is NAMED.