Jean Hill was a consistent critic of the official report of the Warren Commission since its release and in 1992 she co-wrote a book entitled "The Last Dissenting Witness". In this book she made the assertion that her reported testimony before the Warren Commission was fabricated by the commission, a claim also made by others about Warren Commission testimony. Others point out that those claims cannot be verified one way or the other, and argue that the Warren Commission did not fabricate testimony at all, although some people who probably committed perjury point to the possibility of an internal conspiracy.