I threw myself into a forward dive, rolled over one shoulder, and came to my feet already moving laterally. I was just in time to avoid the rush of a fourth whatsit, which had knocked the snow loose just before it dropped down onto me from the tree house Michael had built for his kids. It let out a hissing, bubbling snarl.

I didn’t have time to waste with this backstabbing twit. So I raised the rod as its tip burst into scarlet flame, unleashed my will, and snarled, “Fuego!”

A wrist-thick lance of pure flame leapt from the blasting rod and seared the creature’s upper body to blackened meat. The excess heat melted snow all around it and sent up a billow of scalding steam. Judging by the tackle hanging between the thing’s legs as the steam burst up from the snow, it probably inflicted as much pain as the actual fire.

The whatsit went down, and I had to hope that it wasn’t bright enough to play possum: The Carpenter children were screaming.

I whirled around, readying the rod again, and didn’t have a clear shot. One of the white-furred creatures was running hard after Daniel, Molly’s oldest brother. He’d begun to fill out, and he ran with his fingers locked on the back of the coats of little Harry and Hope, the youngest children, carrying them like luggage.

He gained the door with the creature not ten feet behind him, its wicked-looking horns lowered as it charged. Daniel went through the door and kicked it shut with his foot, never slowing down, and the creature slammed into it head-on.

I hadn’t realized that Michael had installed all-steel, wood-paneled security doors on his home, just as I had on mine. The creature probably would have pulverized a wooden door. Instead it slammed its head into the steel door, horns leading the way, and drove a foot-deep dent into it.

And then it lurched away, letting out a burbling shriek of pain. Smoke rose from its horns, and it staggered back, swatting at them with its three-fingered, clawed hands. There weren’t many things that reacted to the touch of steel like that.