Greer Hendricks spent over two decades as an editor. Prior to her tenure in book publishing, she worked at Allure magazine and earned her Master's in journalism from Columbia University. Her writing has been published in the New York Times and Publishers Weekly. Greer lives in Manhattan with her husband, two children and very needy dog, Rocky. You Are Not Alone is her third novel.

Sarah Pekkanen is the international and USA Today bestselling author of several novels including Skipping a Beat. A former investigative journalist and feature writer, her work has been published in the Washington Post, USA Today and many others. She is the mother of three sons and lives just outside Washington, D.C.

The two women began working together in 2010 when Greer became Sarah's editor. They formed an instant connection, which grew into a close friendship, and they now write New York Times bestselling psychological thrillers together.