A watercolour discovered beside a rubbish tip is identified as Children Under a Palm Tree, a lost work by American artist Winslow Homer. As the picture heads toward auction with a substantial valuation, the investigation shifts from attribution to provenance and the difficult question of who legally owns it.

The team investigates The Procuress, a controversial painting at the Courtauld Institute associated with master forger Han van Meegeren. Technical analysis explores whether it was one of his final works and reveals how he deceived collectors and experts with paintings presented as newly discovered Old Masters.

Philip and researcher Bendor Grosvenor spot a poorly catalogued painting in a South African auction, apparently connected to Rembrandt. Their investigation uncovers a darker history involving Nazi looting, a Jewish art-dealing family and a work once regarded as a German national treasure. Scientific examination then seeks to establish the painting’s true authorship.