Interesting Estelle. But what makes you think they couldn't 'deceased' her in UK, only in Aus?
I based my reasoning on the facts that
1. RB returned to Australia ARRIVING HERE VIA JAPAN? on 31st July, 1997 - two days before Marion ARRIVED. IS THIS AN ESTABLISHED FACT?
2. Marion phoned Sally on 1st August, 1997 so she was still alive then. RB was in Australia so he could not have caused her death then.
3. But where was Marion when she made that phone call? Sussex in England? OR During her stopover in Hong Kong on her way back.
My musings tonight:
If DH had flown to the UK (using another passport not in her name) in the school holidays and possibly been introduced as Mazz to Marion, IMO her role would have been to return to Australia using Marion's Florabella passport dressed in "old-fashioned clothes" with dark hair with a fringe. Photos could have been swapped in those days too. RB could have persuaded Marion (as he did with JO) to leave all her documents including her passport in a shared locker at Heathrow airport to which RB had the key. DH would not have had time to do away with Marion as she had to catch a flight. So IMO DH and RB had everything they needed to commit the frauds in Australia. But the problem is that Marion would have still been alive and able to report them when she later learned that her banks were drained. So if Marion was unaware that RB and DH had flown back to Australia, and made no more phone calls to Sally in the next week or so, I think that the Dutch dentist could have been a hitman paid by RB to end MB's life.
In this scenario, I think RB would have bought DH a return ticket which Marion did not know about and perhaps DH only stayed there a few days. I don't think Diane used Marion's ticket but then how did RB get Marion to fill in the Arrivals Card in advance unless she was coerced? Perhaps he is good at forging handwriting? What was filled in on that card has never made sense to me. Apart from the flight No being filled in by somebody else, I also noticed that the tick besides Married was also different.
I just can't imagine a Teacher like Marion agreeing to saying that she is only going to stay 3 (or was it 8?) days in Australia as it's a long return flight to take in a week. IMO I also think she would have taken her other passport and most of her ID may have still been in the name of Marion as she may not have had time to change it all if you are in a hurry to do everything Marion had to do at the last minute. Also the idea that you can only withdraw small amounts of $5,000 due to losing interest in a high interest account does not make sense if she was in a hurry to get her money. Surely the bank could have transferred all of it to her other account in the UK. Nobody takes cash out unless you are RB!
Putting that she was a Housewife living in Luxembourg is also strange as she does not seem to have gone there especially if his story is that he was going to help her to buy a school in the UK. Were they married at the hotel in Narita airport? It is a possibility as I read you can do that in one day. But was the marriage ever registered? I doubt it. I also can't imagine RB being with Marion for the whole time she was in the UK. His goal would have been to get her documents put in that other suitcase he told her to bring (with her winter clothes) into the locker at Heathrow airport and job was done once he had the key. He would have then abandoned her as soon as he felt he could saying he had business dealings to attend to in Luxembourg and would catch up with her when he could and go on the Orient Express with her later for their honeymoon. He then sends his friends, Mazz (DH) and the Dutch Dentist over there to meet Marion at her hotel.
These are just thoughts I have had tonight so please pick holes in them!