Jacob Sager Weinstein has written for HBO, The New Yorker, and The Onion. He's the author or coauthor of fourteen published books, ranging from picture books to grown-up nonfiction. He lives in London, as do his wife, their two children, and the King of England. (Only some of those people live in the same flat as him.)

By day, Jason Kirschner is an Emmy-nominated set designer for television, with credits that include The Kelly Clarkson Show, Late Night with Conan O’Brien, The View, and The Late Show with David Letterman. By night, Jason is an author and illustrator of children’s books. He lives in New Jersey with his wife, twins, and pet cats and dog.