Is odd to me that his daughters have been very quiet regarding support of their father. Maybe they want to stay private and support him.....but after what we have already learned it would not surprise me in the least. Also would not surprise me if we find out that BS is verbally abusive towards his wife, or belittles her.
If BS took William (and I think he did) Either an opportunity did present itself as BS arrived unannounced and BS grabbed William as he ran around the house or maybe he was lurking in the cemetery waiting to see if he could lure William. Im sure Nana had photos of the kids he had seen on his earlier visit and may have been initially been after the girl. If asked, He could have always said that he had a job on the street and wanted to stop and pay his respects to a deceased friend beforehand. Weren't LE looking for part or a vehicle during the initial search?
If he does not speak up about where William is I hope that someone else will. If part of a ring (where seems to be going) than I'd bet multiple scumbags know his whereabouts.
I cannot believe how sick people can be. How do these horrible monsters find eachother? Especially back in the 80's where there was no internet???