I don't know what you're doing for Halloween. I thought I might eat all the kids sweets and then test the night vision on my giant mechanical ants.
If chasing robots rampaging through the city isn't your thing, however, you might like to curl up with a free Kindle read for Halloween. The Chair is free at this cobwebbiest time of year.
Here are the free book download links:
Free digital book download from Amazon US
Free digital book download from Amazon UK
If you want a free novella, but you're elsewhere or you don't have a Kindle, let me know.