From publisher blurb:
You are Belladonna, the young maid and cook at Castle Ironskull—moonlighting as a vampire slayer!
Years ago, the sinister Lord Adrik Blackbird turned your best friend into a vampire. For their own good, you had to stake them both! Somehow, you succeeded—but while those vampires perished, they had already infected others. The bloodsuckers will spread like a plague through the local countryside—unless you hunt them down!
Play as the lethal maid Belladonna (wielder of silver stakes and deadly poisons), or as your own vampire slaying hero or wizard. Travel through the villages and wilderness near Ironskull Castle, hunting vampires (and possibly other monsters). During your quest, you may uncover disturbing rumors of the rise of a new and terrifying master vampire, and the arcane relic they seek. Can you find it first?
Vampire Hunter Belladonna is a programmed adventure for Old-School Essentials. You won't need a referee—instead a system of branching paragraphs directs you from encounter to encounter as you make your own choice. You resolve combat or other encounters using the Old-School Essentials rules. Belladonna is a 6th-level thief - this is good way to experience mid-tier play.
In this 36-page adventure, you will find:
Over 200 paragraphs detailing wilderness and village encounters.
A new vampire variant, some new monsters, and new magic items.
A "sandbox" wilderness setting that can reward multiple plays.
A choice of using the included pre-generated characters or bring your own PC