The Legend of Sleepy Hollow is one of them. The headless horseman of Washington Irving is sure make some children gasp. You can tell the story of the Flying Dutchman, a mysterious ship that is said to be a doom ship that brings bad things to other ships that crosses their paths. Dr. Frankenstein’s monster is also always popular.
Another classic is A Ghost Story by Mark Twain which has several adaptations that you could read for the kid’s enjoyment. Algernon Blackwood’s The Willows is said to be the best ghost story in history. You might also find some suitable adaptation for children somewhere in your bookstore or on the internet. Another work of Blackwood is The Empty House which is also pretty good.
Now, I have to remind you at this point that you will be reading these stories to children. You might want to kind versions that would be easier for children to grasp and understand. If you’re Halloween party is for adults, which I also think putting a storytelling session is a great idea, you can be as eloquent as you want. But in the meantime, simple and short adaptations would be better for children’s party.
If for some reason you can’t get any storytellers for your party, other options would be buying an audio or video CD of various ghost stories. There are several of these in the market and you can easily buy one off the rack of your favorite bookshop or audio store.
The idea here is to keep your options open. Of course Halloween parties involve game and prizes but having a Halloween storytelling session can be both fun and productive.