At the Great Gallery of Hertford House, home to the Wallace Collection, one of the most significant collections of European fine and decorative arts in the world, the experts being put to the test by Griff Rhys Jones are medieval art historian Dr Janina Ramirez, ceramics specialist historian Lars Tharp, art critic and historian Andrew Graham-Dixon, and historian and director of the Landmark Trust, Anna Keay. The two teams pit their knowledgeable wits against each other in a series of rounds informed by this extraordinary collection.