In Oxford's Bodleian Library, Dr Bendor Grosvenor spots a finely painted portrait by an unknown artist. Could it be by the greatest portrait painter working in Rome in the 18th century, Pompeo Batoni? Show more

Bendor Grosvenor finds two anonymous planks in a drawer at Birmingham Art Gallery. Put together, they show a scene of village life. Is he right in detecting the hand of Flemish master Brueghel? Show more

In Cardiff, a fake restoration reveals a Madonna. Emma Dabiri explores the story of the two Welsh sisters who donated the work, while Bendor Grosvenor looks for proof of a link with Botticelli. Show more