In this episode, we uncover the hidden stories behind auction catalogs and their role in tracing art provenance. Once simple sales tools, these catalogs are now key to understanding the journeys of artworks, revealing their origins, owners, and historical contexts. We explore how coded language, omissions, and cryptic phrases create mysteries for art detectives. From Nazi-looted treasures to modern legal disputes, we examine how provenance research blends art history with investigative skill, uncovering the secrets behind the world’s most iconic masterpieces.