The Castle of Otranto was the third book in a row that I have read that featured the word "Castle" in the title. The peril of reading these books in alphabetical order, of course. This was the first one that was actually readable.
The book is short (about 100 pages) and old (published 1764) and free on the Kindle. What's not to like? Basically this lord, Manfred, has his castle taken over by the supernatural on the day of the wedding of his son. But it wasn't obvious supernatural - my favorite was the giant body parts that the servants reported seeing. The report of a glimpse of a giant hand was fun! This book was pretty interesting and very readable considering its publication date. I'm a fan.