"...a little on one side of me, I spied something that moved along upon the verge with a sliding writhing motion, seeming like the extremity of a sort of trunk; like the body of a huge serpent... Drawn by horror's fearful traction, I moved to the verge of the parapet and looked down..."Somewhere around the early eighteenth century, young Will Harvell joins a sea voyage in search of a mariner's missing son which gradually finds itself drawn towards an ancient and indescribable terror of the ocean in E. H. Visiak's classic novel, which returns to print featuring a new introduction by horror expert Aaron Worth. Combining elements of Conradian sea adventure with Atlantean mythology and a uniquely unsettling brand of metaphysical, sublime horror-all delivered in Visiak's high literary style- Medusa remains a distinctive, influential and still exciting work in the history of early twentieth-century weird writing.