The team investigate an 18th-century landscape that could be a lost work by of one of the biggest names in British art, Thomas Gainsborough.

Can the team prove that a portrait attributed to pioneering female artist Maria Cosway is actually an undiscovered work of the great Regency artist Sir Thomas Lawrence?

Bought for just £1, could a small still life be the work of one of the masters of early 20th-century art, Giorgio de Chirico?

The team investigates a beautiful 18th-century Venetian view. Could this be a work by one of the Italian masters - either Francesco Guardi or Michele Marieschi?