Kathleen McGowan is an American novelist. She is notable for her bestselling novel, The Expected One, which sold over a million copies in the United States and has appeared in over fifty languages.
The Magdalene Line is a series of novels, featuring historical female characters which the author believes history has either misrepresented or obliterated.
Kathleen McGowan began working on the first novel The Expected One in 1989. Focusing on the role of Mary Magdalene, it was self-published in 2005, and sold 2,500 copies. On July 25, 2006, the book was re-published by Simon & Schuster under the Touchstone imprint. The novel focuses on the Christian saint Mary Magdalene, evidently inspired by books such as the 1982 The Holy Blood and the Holy Grail and incorporating key symbolic elements found within the mythical organisation Priory of Sion, and became an instant bestseller.