These two studies of Victorian religious scepticism are extremely welcome, and for largely different reasons. Giles St Aubyn’s Souls in Torment is a magisterial account of the background and growth of doubt, structured according to theme, so that the ideas of the leading thinkers reappear in several places. In The Age of Doubt, Christopher Lane discusses the same set of intellectuals, but focuses on the controversies that subsequently developed out of their work. Whereas St Aubyn’s style indicates experience of the classroom (he is a distinguished teacher), Lane’s approach is influenced by intellectual and everyday discussion in contemporary America, where he is a professor. Their different perspectives instructively illuminate Victorian debates.