Stay Out of the Basement by R.L. Stine
One of my kids loves Halloween – she starts celebrating in September – and, since she wanted to read some horror for children during October, we listened to a few of R.L. Stine’s GOOSEBUMPS books together. Each is a standalone short novel with a pretty hefty scare factor.
Stay Out of the Basement (1992) is the second novel in the series (which contains dozens of stories) and there’s no reason to read the first one first.