The Intruder

McFadden is an American author specializing in psychological thriller and medical humor novels. McFadden earned her degree in medicine from Harvard University. Although she is now a New York Times and Wall Street Journal bestselling author, she continues to practice medicine while maintaining her writing career. In the FAQ sections of her website, McFadden asserts that her medical career has helped to facilitate her literary work. The job has offered her the financial stability to fund the marketing campaigns for her books and helped her incorporate accurate medical scenarios into her work. As of 2025, she now only works two days a week in medicine—specializing in brain surgery—and devotes the majority of her time to writing.

McFadden launched her literary career in 2013 with her first book in the Dr. Jane McGill Series, The Devil Wears Scrubs, which she self-published through Amazon. She later won acclaim for her 2022 internationally best-selling title The Housemaid. The Housemaid is the first title in McFadden’s The Housemaid Series and is being adapted into a movie by Lionsgate. It will star Sydney Sweeney, Amanda Seyfried, Brandon Sklenar, and Michele Morron and is slated for release in December 2025. The Housemaid Series also includes the titles