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?

Fiona Bruce and Philip Mould investigate a small oil painting of a man praying in a mosque, a scene filled with meticulously painted and intriguing detail. Its owner, Jon Swihart, bought it at auction in 1999 and believed it to be the work of the nineteenth-century French artist Jean-Leon Gerome, who was a leading figure in the Orientalist genre of painting.

The team investigate a powerful scene of the aftermath of battle; could it be a work by celebrated Victorian artist Edwin Landseer, thought to be destroyed by a flood in 1928?

Anglesey farmer Huw Lewis bought a small painting depicting the Last Supper for 50 pounds on the internet. Can the team prove it's an 18th century work by the artist Benjamin West?