Mad, Bad, Dangerous to Know: The Fathers of Wilde, Yeats, and Joyce. London: Penguin Viking, 2018. First edition, first printing. This issue one of a limited number of "Exclusive Signed First Edition, October 2018" with colophon page inserted before half-title. Black paper boards, in publisher's dust jacket. Fine as issued. Tóibín's incisive gaze on three of Ireland's greatest writers and their earliest influences, their fathers, and the surprising ways they surface in their work.