From the back cover:
What is this place?
The Abandoned Gothic Estate is not an adventure location for the squeamish, fearful or faint of heart, nor those too attached to 'political correctness'. Other 'haunted house' style adventure settings may say the same thing, but this one means it!
The Abandoned Gothic Estate is essentially a giant mansion described as a three story tall sandbox (four if you count basements) filled with all manner of weird stuff; an intersection of horrible realities where unspeakable, nightmarish, creatures from other dimensions assail the PC's, as they try to find a way to escape the house, while simultaneously uncovering strange, dark, secrets and unlocking odd mysteries.
Will you dare enter? New Magic items and a dozen unique weapon enchantments say you just might! Gold, magic, precious gems and priceless works of art are all sitting there just for the taking, if you can survive...
The Abandoned Gothic Estate... (I dare you to enter)