Isolated in a remote mansion in a central European forest, Laura longs for companionship until a carriage accident brings another young woman into her life: the secretive and sometimes erratic Carmilla. As Carmillas actions become more puzzling and volatile, Laura develops bizarre symptoms, and as her health goes into decline, Laura and her father discover something monstrous.

Originally serialized in the London literary magazine "The Deep Blue", from 1871 to 1872.