My family was torn apart due to inheritance issues–luckily I was one generation removed so I was not directly involved. My maternal grandfather had built a “decent” nest egg, particularly given the relatively low means my family comes from. When he died it was fairly simple, everything went to his wife. The will written before his death also stipulated that when both died, everything would be divided equally between the five children, with their eldest daughter serving as executor.
Oddly enough, the eldest child, his eldest son, was a lawyer and would have been a good choice for executor, but he had a rare medical condition developed in his 40s and it was basically said by his doctors he didn’t have long to live at the time the will was written, so they didn’t put him as executor due to the fear he wouldn’t be alive (incidentally he ended up not going that route–he is still alive to this day 20 years later.)
The eldest daughter was not a good choice for executor, while not prone to corruption herself, her husband was a gambling addict who had also ran a few small businesses, heavily financed by family loans he never repaid, and then secured a job managing a used car dealership. Due to his influence (but the aunt obviously is responsible ultimately, for her actions) they stole almost the entirety of the estate and never distributed it to the other beneficiaries.
There were a lot of mistakes / bad things done during this process. When they sold their home, the aunt actually split the proceeds five ways and wrote checks to each beneficiary–this was the only money they ever saw, but even distributing those funds prior to the estate closing was sketchy. Around $800,000 in other investments and assets was just literally stolen.
Another $300,000 she took for herself but it was legal–my grandparents had a few accounts where they had named a beneficiary on the account, and they assumed if they named the executor, that meant it would split to the five children, that isn’t how it works, so she got all that money free and clear–that was a mistake by the grandparents and one easily avoided.
The $800,000 stolen, the family worked with the local commissioner of accounts to report this malfeasance, and they worked with local prosecutors to get the crime investigated and prosecuted. The aunt was dead to rights, and plead guilty, she had to take a felony conviction but was given no jail time, 2 years probation. The money was entirely gone–they used a small amount to renovate their home and the rest was lost in a gambling venture (we assume the intent was he gambled the principal, pocketed the winnings, and returned the $800k to the estate with no one the wiser, as he was a degenerate gambling addict this would be how his mind would work); while the aunt was required to pay restitution, her home was immune from that judgment so couldn’t be seized to fulfill, and she retired shortly after and has no other real assets or income. I think some amount of her monthly retirement is garnished, so the other four children get like $40/mo or something and obviously that will never work out math wise, and it irrevocably fractured the family–none of the siblings have spoken to her in over 20 years.
Note this incident is what lead me to make sure my own estate would be handled by a neutral, professional executor not connected to family.