Holly Goldberg Sloan was born in Ann Arbor, Michigan, and spent her childhood living in Holland; Istanbul, Turkey; Washington, D.C.; Berkeley, California; and Eugene, Oregon. After graduating from Wellesley College, she began writing family feature films, including Angels in the Outfield and Made in America. Her first middle-grade novel, Counting by 7s, is a New York Times bestseller. Holly lives with her husband in Santa Monica, California.