1) If the beneficiary was the co-owner of the real estate, he has a perfectly legal right to reside there: anyone may reside in property of which he is an owner.2) That the decedent was "trying to write up a new" will is irrelevant; only a finalized, properly signed and witnessed will has any effect. A will which was never finalized, signed and witnessed simply does not exist and has no power or effect.3) If a new will was not signed and witnessed, the prior will remains in effect.If you believe that the old will gave you more than the executor is telling you that you get, or that there was no valid old will at all (so you would inherit by "intestate succession"--the rules for who gets when there is no will), you could bring a lawsuit in chancery court (a part or division or country court) challenging the executor's distribution of assets. In the lawsuit, the executor would have to provide a copy of the will and show that what he is doing is in compliance with it. But the problem is, you have to bring the action before you see the will and see if you actually have grounds for it, since only in or during the lawsuit can you force the executor to divulge the will. Such a lawsuit is procedurally complex; if you want to explore and bring one, consult with a probate attorney; you are unlikely to be able to successfully bring it on your own.