The girl who was her assistant/typist! Seems she was the real author of the books. Years ago the two girls killed one of their mothers, they served time for the crime, but were being blackmailed by the woman who was arrested, on todays show, she had worked at the prison the girls were in. The "author" wanted to retire and other girl was "driven" to write and didn't want to stop making money. So she killed her friend, some friend! Yikes!