Since Halloween is quickly approaching, I've seen a ton a FREE Kindle downloads that are appropriate for the season.
If you need some FREE Halloween E-Books or FREE Ghost Stories, I have linked to two search queries I did on the Kindle site, and it is sorted by price.
You will find many completely FREE options on those lists.
There are also classics such as Dracula, Frankenstein, The Strange Case of Dr. Jekyll and Mr. Hyde available.
Here are a few non-Kindle FREE E-book offers you may also be interested in: