Re. "...players SD, GD, and CC,..." -
Post #45, supra. [Para. one, final sentence]
Please indulge this sweep of my cobwebs,
as well as a few humble opinions.
TIA

"
CC" -> summoned for the Broomfield
Wallibi by MG @ BM's direction and later reversed, never arrived at the site, nor stayed at the accommodations reserved for him nearby, presumably returning home.
In any & all events, iirc, is not CC
deceased?
"
GD" -> To paraphrase Benjamin Franklin, "Two may keep a secret, if one of them is dead."
But even His Brilliance may have appreciated the difficulties further homicides would present. Plus, unlike Suzanne's circumstance, killing an old friend would never be countenanced by his god.
IMO, only if Barry had something really,
really BAD on
GD, would he have risked enlisting him.
"
SD" -> OMO, but Barry's abject disparagement of mere-need-fulfillers makes imparting any confidence of import relating to himself, to her, extremely unlikely.
As to time/place/event/corroboration/refutation, an "encouraged"
SD could be helpful in building the case I should think.