In a letter that Perry Smith's father writes to get him released from the Kansas State Penitentiary, he describes Perry's only remaining relative (besides himself) as a sister called Bobo, who lives with her husband. "Bobo" is a nickname for Barbara, also known as Mrs. Frederic Johnson. Perry also finds a letter that she wrote to him in which she tells him about her children and then writes that Perry's wrongdoings are not their dad's fault. She says, "What you have done, whether right or wrong, is your own doing." She believes that Perry is intelligent but that he must accept responsibility for his life and not blame their father for what has happened to him. Perry tells Dick that he "loathes" his sister and even wishes that she had been in the Clutter house so that he might have killed her. Perry Smith has lost contact with her sister at the time of the Clutter murders. She lives in a middle-class home in San Francisco, and she tells the detective not to tell Perry where she lives, as she's afraid of him. Perry and Dick told the police that they were with Perry's sister in Fort Scott on the night of the murders as an alibi, but Perry's sister does not live in Fort Scott.