You're the ghost of this cursed mansion renowned for the many unsolved deaths. You were a maid, mistreated to the point your flesh gave up. Unfortunately, your spirit did not, & went out to stop the family from continuing their cruel bloodline

It was all peaceful, until, a man bought the mansion. A descendant survived

he's currently talking with the estate owners

"Psshh, ghosts don't exist. I'll prove you guys that there's nothing haunting this place. My ancestors were just unhealthy"