Seeing as we are going on flights of fancy… maybe the other heir is the intended victim of the scam…
DB and Jane set up finance to buy a house. The sale falls through —they pull out—. They ask OP to let them stay.
DB and Jane “break up”. OP is likely to let her homeless and heartbroken DB stay longer than she would be willing to host DB, Jane and her DC. Jane and DB arrange valuations of the property to establish proof that OP wants to sell up. It’s not improbable that OP might want to release equity in her property now she is unwell. They don’t even need to actually have viewings, although if DB is living there he could facilitate viewings when OP isn’t there, they have established evidence of OP’s intention to sell.
It would be very difficult to sell a property fraudulently while the owner is living there - usually these scams happen when the property is rented or empty so viewings can take place and mail be intercepted. If would be far easier for DB to “buy” the property without OP’s knowledge than for Jane to sell it to a third party.
DB could intercept any mail about the fake sale, has access to her ID to open an online bank account in OP’s name for the proceeds to be paid into, emails to and from the fake email address are from OP’s IP address.
The letter stating that DB now lives at the address establishes that it is his home so it’s reasonable that he might want to buy it and OP might have changed her mind since she wrote her will and now want him to have the house. It also might be for the purpose of making it easier to prove that he knew about OP wanting to sell the property before the EA valued it to avoid having to pay any EA fees for the fake sale.
DB wouldn’t even need to buy the house, just put some money in. If he owned the house with OP as a joint tenant, he would inherit the house instead of OP’s intended heir. If he stands to inherit the rest of OP’s estate, he would inherit the money he paid for the house back! Entirely plausible that a loving brother might use his house deposit to buy part of his DS’s home to save her having to sell up or get a mortgage to buy it from her for sentimental reasons … Entirely plausible that his DS might have chosen to make him a joint tenant in gratitude. Entirely plausible that she might have intended to update her will after the sale so the other heir didn’t lose out but never got round to it. Entirely plausible that brain fog meant she didn’t realise that being a joint tenant would mean she couldn’t leave her share to the other heir.
If OP doesn’t have alerts set up with the land registry, the sale would be unlikely to be discovered until distribution of the estate. It would be pretty hard to prove the sale wasn’t genuine without OP as a witness. Especially if the DB buys the house outright for the full market value. There is a good chance that the other heir wouldn’t suspect fraud or pursue it. Who wants to accuse a relative of fraud without strong proof?
That probably isn’t what is going on 😂 It’s a shame I am too honest to be a fraudster, I think I would be better at it than Jane 😂
Sorry you are going through this, OP. Don’t stress, you have had good advice on how to protect yourself. Hopefully my improbable criminal flight of fancy will make you laugh!