That's a pretty good theory! My thoughts have run in a similar thread. I have puzzled why JS would "cover" for Dina/ Nina if he had any knowledge or suspicion that they murdered RZ. The only plausible answers I have come up with are:
1.) JS knew nothing, or
2.) JS knew AS was involved along with Dina/ Nina, and is keeping quiet to protect AS's involvement, or
3.) JS knew Dina was headed in Rebecca's way to have some kind of angry/ violent confrontation, and didn't do much or anything to prevent it. He may not have anticipated that Dina was angry enough to actually kill Rebecca. He may have called RZ warning her Dina was furious, and was going to confront her-- that may be the "final" voicemail that is lost. When he found out the next morning that AS found her hanging, had to protect both his knowledge that Dina was on the warpath, and whatever level of involvement AS had. Which leads to keeping quiet about Dina/ Nina as well, to protect him and AS. I lean towards #3 the most strongly.
I can't think of any other theoretical situations where Jonah "knew" something, but would protect Dina or Nina from charges or investigation.
I have rejected the idea that JS ordered some kind of "hit" on RZ.
I'm on the fence about Adam's level of involvement.
I absolutely believe Dina and Nina were involved. The extreme anger and humiliation aspects of the murder have always appeared to me to be the work of a jealous and vindictive woman/ women, with a strong element of sadism. I believe Rebecca was taunted and tortured by another woman/ women in the process of murdering her. However, the act of tossing her over the balcony could have had male involvement for strength.
I don't think the murder was planned too far in advance-- as Lash has opined, it may have started out as "simply" an angry confrontation, that evolved to restraint and torture, that then "had" to be cleaned up with a murder to keep her quiet about what happened. Either way, it's premeditated first degree murder to me. But I am also a realist that it will never be charged that way. At best, if any charges ever came about in the years to come, manslaughter or 2nd degree. But I even doubt any criminal charges will ever come about.
The murderers got away with it. They hit the lottery with the suicide ruling, imo. They continue to be vigilant, imo, but they are full of hubris, and continue to feel secure attacking RZ post mortem. But I doubt that they will ever be charged. It would be nice if someone would grow a conscience and confess to what happened, but I doubt that will ever happen, either. AS has to be kept out of the spotlight, and away from the media, because he is so oddly verbally impulsive, he is the one who could inadvertently say something to implicate all 4 of them, imo. Dina and Nina have each other's backs, and are smart enough to keep quiet. Jonah just wants Dina and Nina completely out of his life, and appears to be doing his best to shut them out and ignore them, imo. Dina, and Nina, imo, will live under a cloud of suspicion for the rest of their lives.
If Dina files a suit against Jonah, with her extreme level of hubris, she may completely underestimate his counter move, imo. If she is smart, imo, she will just go away and live the rest of her life on the winnings from the divorce settlement, and not try for more. He could come out of the woodwork and squash her like a bug, imo.
Excellent theory! I've of similar thoughts.
I do believe the rope-binding and noose-hanging of Becky off the courtyard balcony was premeditated, long before Max's accident. The plot likely started out as a sick, sadistic "fantasy" in an angry, jealous woman's mind to punish Becky for "stealing" her man Jonah, and became more concrete after the woman watched the movie, "The Housemaid". The fantasy was building up to a climax, and became a reality upon Max's accident.
I believe the murderer would have carried out her sick fantasy and killed Becky -- even if Max had survived. The murderer lacks self-control and was already on an explosive course to commit the heinous crime. She was a ticking time-bomb. Max's accident served as the perfect justification she needed for the kill. The murderer didn't just want to quickly kill Becky, she wanted to do it in the most humiliating and terrifying way possible. The murderer threw everything into the mix -- nudity, bindings, noose, public hanging, loony black painting of words on door, etc. I can only imagine the terror in Rebecca as she was tormented and tortured by the murderer and her accomplice the last hours of her life.
As to the 3 scenarios of Jonah's involvement or non-involvement in the murder, IDK. I lean most strongly towards #1. I don't think Jonah knew or participated in Becky's murder. I'm still on the fence about Adam's involvement.
I think Jonah might have initially inadvertently helped cover up the crime by calling Pfingst in to protect Adam. I don't believe Jonah suspected Adam as killing Becky; he only wanted to help his inarticulate, socially awkward brother who seems to have a tendency to blurt out inappropriate things and stick his foot in his mouth.
Since an insider had informed us that Jonah and his two teenage children from his first marriage have not been on speaking terms with Dina since Max's burial, and that it appears he and his first ex-wife have been keeping their children on a tight leash away from Dina (when prior to Max's death Dina and Nina were close to and actually hung out a lot with the female teen GS), it is evident that they fear at worst, that Dina is a killer, or at best, an extremely negative influence.
Given that Jonah has severed ties permanently with Dina, had Jonah previously colluded with Dina in murdering Becky, either he or Dina would have pointed fingers at each other already. The fact that neither has done so means they did not conspire together. You have to ask why if Dina is innocent and she suspected Jonah of having done harm to either Max or Becky, with Dina's hate and bitterness towards Becky and presumably Jonah, why hasn't she express her suspicions about Jonah to the police? I think it's because she knows he did not do anything to either Max or Becky because she herself was the murderer, along with her sister. Also, if she publicly blames Jonah for either deaths, she will lose any financial support she continues to receive from him. And she does not want to lose her high-paying lifeline.
Why hasn't Jonah point the finger at Dina? Maybe it's because he has no proof that she did anything and doesn't want to get entangled in an ongoing police investigation. Or as another poster said, maybe Dina has the sword of Damocles hanging over him. I would suspect that the sword has to do with his past business finances.
Someone asked incredulously how could Dina have lugged Becky and toss her over the balcony by herself? Well, I have no doubt that two huge, Amazonian type, aggressive, raging women like Dina and Nina (both over 5'7" and heavily built over 180 lbs) high on adrenaline and hate could easily haul a hands and ankles-bounded petite Becky (5'3" and 103 lbs) to the balcony and toss her over like a tied up sack of rice.
I speak from experience. I'm only 5'6" and 125 lbs and I can easily carry my 100-lb child across the room and lay him down on the sofa. You'll be amazed at the amount of physical strength one woman, especially a mother, can muster when necessary. And since there were two women -- Dina and Nina -- hauling Becky to the balcony and throwing her over would be a cinch.
So my view is that Becky was murdered by only the two women, Dina and Nina.