Yes I am rather short on literature like that myself. Keep the ideas flowing.
Following is the website of the author I recommended.
http://www.paulcdoherty.com/I like his Pilgrimage from London to Canterbury tales. These start with the book, An Ancient Evil. I like these because the evil in these tales sound plausible, and the endings are not wrapped up neatly and tied with a bow. So when you're done with the book, you're still left wondering.
I also like The Sorrowful Mysteries of Brother Athelsan. In this series Brother Athelsan as part of a penance given to him for disobedience, is sent to a run down church in London as its Pastor and must be a scribe to the King's coroner. Good story lines, fantastic historical detail (Mr. Doherty graduated with an English history degree from Oxford), and some well placed humor.
When shopping for the above mentioned books, use the website for reference because it's not uncommon to find the same title with different pseudonyms.
I have one more recommendation that wouldn't be classified horror or mystery, it's just IMHO, a good book written by a Catholic author. The title, Dialogues With the Devil, written by, Taylor Caldwell. It's about a series of letters between, St. Michael the Archangel and Lucifer. Read reviews here,
http://www.amazon.com/gp/product/0891902791/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=0891902791&linkCode=as2&tag=httpwwwchanco-20 A much better piece of work then the Screwtape Letters. Do try your library first. It's not always easy to find an inexpensive used copy.
When you've run out of material to read let me know, I'm not only a hardcore bibliophile, I'm also a former bookseller.
A little hint on how to save some money when shopping for used books online. Take a look at alibris.com and if you find the book you're looking for, at the price you're willing to pay, go searching for a coupon code for alibris. The codes you'll find at minimum, will save you at least a dollar. Alibris is the only site I'm aware of that always has coupon codes out there on the net.
But don't forget, the best starting point for books is your local library! :reading:
Oops, forgot an author. Louis de Wohl writes great historical fiction novels about various saints. Again, another Catholic author who pays strict attention to historical detail.