Carol Cassella, MD, is a practicing anesthesiologist, novelist, and speaker. She majored in English literature at Duke University and attended Baylor College of Medicine. She is the bestselling author of the novels Gemini, Oxygen, and Healer, published by Simon & Schuster. Carol lives on Bainbridge Island, Washington, with her husband and two sets of twins. Visit the author at CarolCassella.com.