This character is not seen during the story, only heard. Katherine Stone was a citizen of Vault 11. She was married to Nathan Stone. The Justice Bloc had threatened to nominate her husband Nathan as Overseer if she did not perform sexual favors for them. She agreed to their demands, but the Justice Bloc nominated Nathan anyway. Because of this, Kate murdered several members of the Justice Bloc, including many of those who had raped her. As a result, she was elected Overseer of Vault 11. As Overseer, she instituted Overseer Order 745, which ended the election of Overseers. Instead, Overseers would be chosen by random by a computer terminal. This led to the riots that caused the fall of Vault 11.