Greer Hendricks is the coauthor of the New York Times bestseller The Wife Between Us. Prior to becoming a novelist, she spent over two decades as an editor at Simon & Schuster. She obtained her master's degree in journalism from Columbia University, and her writing has appeared in The New York Times, Allure, and Publishers Weekly. She lives in Manhattan with her husband and two children.

Sarah Pekkanen is the international and USA Today bestselling author of eight previous solo novels and the coauthor of the New York Times bestseller The Wife Between Us. A former investigative journalist and award-winning feature writer, she has published work in The Washington Post, USA Today, and many others. She is the mother of three sons and lives just outside Washington, D.C.