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?

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.

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

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?

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

The team investigate an early portrait and a charming little landscape, both believed to be by one of the biggest names in art. Could two new Renoir works have surfaced in the UK?

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.

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

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

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?

When a keen art blogger picked up a £35 bargain at auction, he started to suspect he’d found a missing work by Frances Hodgkins. Can the team prove his hunch was right?

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 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.

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

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.

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?

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?

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

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.

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?

American artist Jeffrey Kroll believes his flower picture is by one of the pioneers of abstract art, Piet Mondrian. Can the team help him build a case and prove its authenticity?

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.