In Bones, one of the characters, Hodgins, is mega-rich. As in, one of the richest people in the world. When the psycho serial killer needs a diversion to help him escape, he steals Hodgins's wealth. Just by hacking into his account. They sit and watch as his money drains away, and he's left with only a few million, from the billions and billions his family had acquired.
There's no explanation for why all that wealth is sitting in a bank account, not held in property or bonds or registered stock or art or jewellery, or otherwise properly invested and managed. Also no explanation for why the bank can't simply reverse a clearly fraudulent transaction.