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? Also in HD. [S,AD]
4/6. 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. Also in HD. [S,AD,SL]
3/6. 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? Also in HD. [S,AD,SL]
3/4. 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? Also in HD. [S,AD]
1/4. A mysterious inscription, a famous name and a colossal price tag. The team embark on a high-stakes quest to authenticate a 'lost' Churchill. Is it genuine or a clever fake? Also in HD. [S,AD,SL]
1/4. A mysterious inscription, a famous name and a colossal price tag. The team embark on a high-stakes quest to authenticate a 'lost' Churchill. Is it genuine or a clever fake? Also in HD. [S,AD]
The team delve into the world of music memorabilia when they investigate a piano linked to John Lennon and a guitar with a connection to Ronnie Wood, but are they the real deal? Also in HD. [S,AD,SL]
Could a beautiful painting of women working in a field be a valuable lost work by Helen McNicoll, a celebrated impressionist artist from Canada? Also in HD. [S,AD,SL]
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? Also in HD. [S,AD,SL]
4/4. 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? Also in HD. [S,AD]
3/4. Could two simple sketches be by great French artists Pissarro and Cezanne? The team set out to gather evidence to prove they're genuine. Also in HD. [S]
3/4. Could two simple sketches be by great French artists Pissarro and Cezanne? The team set out to gather evidence to prove they're genuine. Also in HD. [S,AD]
1/4. Could a curious wall painting discovered in the bedroom of a Surrey cottage be the work of one of the pioneers of modern British art, Ben Nicholson? Also in HD. [S,SL]
1/4. Could a curious wall painting discovered in the bedroom of a Surrey cottage be the work of one of the pioneers of modern British art, Ben Nicholson? Also in HD. [S,AD,SL]
4/4. 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? [S,AD,SL]
2/4. 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? [S,AD,SL]
1/4. 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. [S,AD,SL]
4/5. A Double Whodunnit: Art series with Fiona Bruce and Philip Mould. Fiona and Philip investigate two portraits of black British subjects from the 18th and 19th centuries. [AD,S,SL]
3/5. Henry Moore: Art series with Fiona Bruce and Philip Mould. The team look into whether a small watercolour sketch could be by the British 20th-century sculptor Henry Moore. [AD,S,SL]
3/4. Gauguin: Art series with Fiona Bruce and Philip Mould. The team are on the trail of two pictures believed to be by Paul Gauguin, a giant of 19th-century art. [AD,S,SL]
2/4. Tom Roberts: Art series with Fiona Bruce and Philip Mould. The team try to prove that an online purchase is a lost work by Tom Roberts, one of Australia's greatest artists. [AD,S,SL]
1/4. Constable: Art series with Fiona Bruce and Philip Mould. The team try to find out whether a beautiful English landscape is a lost masterpiece by John Constable. [AD,S,SL]