This book considers the fiction of Joseph Sheridan Le Fanu (1814-73) in its original material and cultural contexts of the early-to-mid Victorian period in Ireland. Le Fanu’s longstanding relationship with the Dublin University Magazine, a popular literary and political journal, is crucial in the examination of his work; likewise, his fiction is considered as part of a wider surge of supernatural, historical and antiquarian activity by Irish Protestants in the period following the Act of Union between Great Britain and Ireland (1801). This study discusses in detail Le Fanu’s habit of writing and re-writing stories - a practice that has engendered much confusion and consternation - while posthumous collections of his work are compared with original publications to demonstrate the importance of these material and cultural contexts. In new critical readings of aspects of Le Fanu’s best-known fiction, light is cast on some of his overlooked work through recontextualisation.