Carmilla with annotations by D. MacDowell Blue. This is the blurb:
“Growing up in the lonely forests and valleys of Styria, Laura had only her father and two governesses for company. Until she came. Carmilla. Beautiful and fragile. Kind and friendly. As mysterious as she was devoted. But also ... hungry.
“For the first time since it was published n 1872, here is a complete guide to Le Fanu's classic vampire tale. Over four hundred footnotes give detailed answers to dozens and dozens of questions. Where is Styria? When is this story taking place? What is an awl? An escrutcheon? A hippogriff? Why did Carmilla seek out Laura? Also, unanswered questions and intriguing possibilities are charted out, one by one.
“Included is a preface about Carmilla from Andrew M. Boylan (of "Taliesin Meets the Vampires" fame) and an introduction about Le Fanu himself by horror author/scholar David A. Sutton.”
The book can be purchased here.