Barbara Delinsky has written more than twenty New York Times bestselling novels, with over thirty million copies in print. Her books are highly emotional, character-driven studies of marriage, parenthood, sibling rivalry and friendship. She is also the author of a breast cancer handbook. A breast cancer survivor herself, Barbara donates her author proceeds from the book to fund a research fellowship at Massachusetts General Hostipal. Visit her at www.barbaradelinsky.com. Internationally bestselling author Tess Gerritsen is a graduate of Stanford University and went on to medical school at the University of California, San Francisco, where she was awarded her M.D. Since 1987, her books have been translated into 37 languages, and more than 25 million copies have been sold around the world. She has received the Nero Wolfe Award and the Rita Award, and she was a finalist for the Edgar award. Now retired from medicine, she writes full time. She lives in Maine.