J. Sheridan LeFanu

"In an isolated castle deep in the Austrian forest, Laura leads a solitary life with only her ailing father for company. Until one moonlit night, a horse-drawn carriage crashes into view, carrying an unexpected guest - the beautiful Carmilla. So begins a feverish friendship between Laura and her mysterious, entrancing companion. But as Carmilla becomes increasingly strange and volatile, prone to eerie nocturnal wanderings, Laura finds herself tormented...