The Prison librarian is an unnamed woman who works as a librarian at the prison.
Bart and Lisa thought that Martin died because of their fault. When Bart wanted to admit to what happened to Martin, Lisa got frightened of going to jail for being an accomplice. She imagined herself as an older prisoner, sitting in the cell. When a prison librarian passed her with a trolley of books, Lisa asked her whether she had Joyce Carol Oates. The librarian told her that she had only Danielle Steele, to which Lisa started screaming.