Owner Sally Green believes her landscape painting is by one of the forefathers of impressionism, Jean-Baptiste-Camille Corot. Can the team gather new evidence to prove its authenticity?

Could two simple sketches be by great French artists Pissarro and Cezanne? The team set out to gather evidence to prove they’re genuine.

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?

When Ian and Julie moved into their Surrey cottage nearly 20 years ago, they discovered a curious wall painting in one of the bedrooms. They had no idea who put it there. Julie wanted to get rid of it as it didn't match her decor plans, while their four-year-old wanted to colour it in with her crayons.

A sculpture found in the long grass of a Norfolk home bears striking similarities to the work of Henry Moore. Could it be a lost work by one of the greatest 20th-century artists?

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.

The team return to the story of a painting by Canadian impressionist Helen McNicoll. Did owner David take a big money offer from a rich collector or try his luck at auction?

An American couple think their $200 portrait could be a long-lost work by artist Angelica Kauffman. The evidence is promising, but its condition raises alarming questions.

Artist and dealer David Taylor believes his saleroom punt is a work by one of Canada’s most celebrated impressionists, Helen McNicoll. Can the team help prove it's the real thing?

Could a mysterious canvas covered in white paint be hiding a lost painting by one of the most important painters of the 20th century, Armenian-American artist Arshile Gorky?

A sculpture found at a car-boot sale in Essex bears striking similarities to the work of Elisabeth Frink. Can the team prove it’s part of an edition sculpted by her in the 1950s?

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.

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?

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

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.

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.

The team return to two portraits of Black British women from the 18th and 19th centuries. How have recent changes in society transformed the fortunes of these important artworks?

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

A painting bought from an online auction in Monaco described as 'in the style of Sir Joshua Reynolds' looks promising, but could something murkier be lurking beneath the paint?

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

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

Fiona Bruce and Philip Mould examine a still life that may have been painted by prolific artist William Nicholson, but which has been rejected by leading experts on his work. They discover a useful source of evidence in Nicholson's own paint box, but as they delve into the painting's history, they discover it may have been connected to one of the 20th century's greatest art crimes. Fiona meets a reformed forger to discover if he ever faked a Nicholson while Philip takes the painting to Canada to compare it to another of the artist's works.

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

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

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.

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.

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

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

Fiona Bruce and Philip Mould investigate the origins of two paintings by unknown artists dating back to the 18th and 19th centuries, which unusually for the period, depict black subjects. One is a portrait of Dido Belle, a famous former slave adopted into an aristocratic English family in the 1760s, while the other depicts two children against a tropical landscape, and is believed to have been painted as a protest against the slave trade.

The team try to find out whether a white square of plaster is an early work by Giacometti.

Fiona Bruce and Philip Mould investigate a small watercolour sketch that could be the work of sculptor Henry Moore. The piece was found in 2012 in a hoard of artwork stolen by the Nazis. While the unidentified piece has many characteristics of Moore's work, none of the other artworks recovered were by British artists, so it remains a mystery how it came to be there. The team must not only find out who created it, but also who it belonged to, since it may have been looted from Jewish owners during the Holocaust and will need to be returned to surviving descendants.