Building on Koenraad Jonckheere's seminal monographs from 2007 and 2011, this book offers fresh insights into the works of Willem and Adriaen Thomasz. Key, two prominent 16th-century painters. Through an examination of newly attributed pieces and an analysis of their artistic evolution, it further enhances our understanding of their thriving workshop, a pivotal force in Antwerp's artistic scene. The book explores the distinctive stylistic approaches of both artists, from Adriaen Thomasz. Key's austere yet meticulous portraiture to Willem Key's diverse body of historical and devotional works. Drawing on extensive provenance research and keen visual analysis. Featuring around 80 artworks, this catalogue raisonne further positions Willem and Adriaen Thomasz. Key as key masters of their era.

It serves as an invaluable resource for art historians, collectors, and enthusiasts of early modern art in the Low Countries.