The Expected One by Kathleen McGowan

When journalist Maureen Paschal begins the research for a new book, she has no idea that she is stepping into an ancient mystery so secret, so revolutionary, that thousands of people have killed and died for it.
Two thousand years ago, Mary Magdalene hid a set of scrolls in the French Pyrenees: the Gospel of Mary Magdalene, her version of the life of Jesus and the events of the New Testament. Protected by supernatural forces, these sacred scrolls could be uncovered only by a special seeker, one who fulfills the ancient prophecy of L'Attendu - the Expected One.
As Maureen becomes immersed in the mystical lore of L'Attendu, the eerie prophecy of the Expected One casts a shadow over her life and work, and a long-buried family secret comes to light. Maureen's extraordinary journey takes her from the dusty streets of Jerusalem to the cathedrals of Paris to the rocky foothills of southwest France. To search for the scrolls, she must unravel clues that link history's great artistic masters, dynasties, and scientific minds. Ultimately, she comes face-to-face with Jesus Christ, Mary Magdalene, and a love triangle that changed the course of history in a deeply moving and powerful new gospel... the greatest story never told.

This book is part of the "Magdalene Line Trilogy" series.
Here are some other books from this series: