In the late 1990s, Old Master drawings expert Julien Stock made an incredible discovery—a previously unknown Michelangelo drawing. Hiding in an unmarked book at England’s Castle Howard, the study of a mourning woman from early in Michelangelo’s career had not been seen for generations. This drawing is now part of the Getty Museum’s collection. In this episode, Stock tells the story of this discovery and the process of verifying the authenticity of his remarkable find.