The Scarecrow Walks at Midnight is the 20th book in the original Goosebumps series.
The cover illustration features one of the scarecrows on a pole in the cornfield at night. There seems to be a red light coming from an unknown source while there is a full moon in the background.
Synopsis[]
Jodie loves visiting her grandparents' farm. Okay, so it's not the most exciting place in the world. Still, Grandpa tells great scary stories. And Grandma's chocolate chip pancakes are the best. But this summer the farm has really changed. The cornfields are sparse. Grandma and Grandpa seem worn out. And the single scarecrow has been replaced by twelve evil-looking ones. Then one night Jodie sees something really odd. The scarecrows seem to be moving. Twitching on their stakes. Coming alive...