Engaging with recent, influential accounts of monstrosity - from literary critical work (Huet, Greenblatt, Thomson Burnett, Hampton), to histories of science and 'bio-politics' (Wilson, Céard, Foucault, Daston and Park, Agamben) - this book focusses on the ways in which monsters give particular force, colour, and shape to the imagination; the image at its centre is the triangulated picture of Andromeda, Perseus and the monster, approaching.