Fiona and Philip take a look at a painting they think is an unrecognised work by Monet. They then try to persuade different luminaries from the art world to believe them.

Fiona and Philip take a look at a painting which could be a piece of work by 19th-century American artist Winslow Homer and was discovered at a rubbish tip.

Fiona and Philip take a look at the career of forger Han van Meegeren, who managed to fool galleries and buyers in the early 20th century with his fake pieces by Old Masters.

Fiona and Philip stop the auction of a painting that used to be a German national treasure but was stolen from it's Jewish owners by the Nazis during the Second World War. They then follow the story as it is discovered whether it is the work of Rembrandt.

Fiona and Philip examine a painting that owner Patrick Rice thinks is by Edgar Degas. If its genuine, it could be worth about £500,000. They trace the artwork back through time to find out whether it really was created by one of France's greatest artists.

Fiona and Philip take a look at the history of three paintings bequeathed to the National Museum of Wales after their owner died in 1951. It was always thought that the paintings were by landscape artist JMW Turner, but only months after the museum took ownership, experts said that they were fakes.

The tables end up being turned on Philip this week when one of his own pictures are put under the microscope.

Fiona and Philip attempt to help a man who believes he owns a painting by French post-impressionist Edouard Vuillard.

Fiona and Philip attempt to prove that two paintings are missing works by one of the country's best-loved artists, John Constable.

Fiona and Philip attempt to help Martin Lang try and prove the painting he bought in 1992 is by modern master Marc Chagall.

This week the focus is on Britain's public art collections, in which 17,000 paintings are listed as `artist unknown'. Philip identify several works they believe are by Thomas Gainsborough.

Fiona and art experts Philip Mould and Bendor Grosvenor attempt to help a man who has inherited three paintings supposedly by LS Lowry.

Nicky Philipps needs help in determining whether a mysterious painting housed at Picton Castle in Pembrokeshire is a genuine piece of work by French Impressionist Pierre Auguste Renoir.

Fiona and Philip are at a church in Lancashire, once patronised by Yorkshire's famous Bronte sisters, that is the home of a painting thought to have been made by an Italian old master.

Fiona and Philip attempt to help Under-Sheriff and Secondary of London Charles Henty find out whether two paintings in his possession are as valuable as he believes.

The team investigate a portrait which may have been one of Lucian Freud's first creations.

The team try to prove the authenticity of a suspected lost masterpiece by Paul Delaroche.

A sketch of a dancer believed to have been drawn by Auguste Rodin is investigated.

Featuring works claimed to be by Willem de Kooning, Philip Mercier and Adolph von Menzel.

The team try to find out whether a painting is a lost masterpiece by John Constable.

Is a purchase from an online auction site a lost work by Australian artist Tom Roberts?

The team examine two pictures believed to be by Paul Gauguin, a giant of 19th-century art.

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?