Toby Jones, Gina McKee, Tim McInnerny and Denise Gough in Robin Brooks' adaptation of Michael Frayn's novel.
Martin is asked to value some paintings and, though he's no expert, he is immediately sure one of them is a priceless missing masterpiece.
With over-reaching ambition, he sets about acquiring it without telling the owner what he thinks he has found and rapidly gets in so deep that he puts everything at risk - even his marriage, even the painting itself.
Directed by Clive Brill
Produced by Ann Scott
A Greenpoint production for BBC Radio 4.