Cooney with Ann Reit, her book editor at Scholastic. Many of the books Cooney wrote with Reit were by assignment. “Ann decided what books she wanted (for example, ‘entry-level horror, no bloodshed, three-book series,’ which became Fog, Snow, and Fire) and I wrote them. I loved writing by assignment; it was such a challenge and delight to create a book when I had never given the subject a single thought.”