Tony Beach, wine merchant, knows his scotch, so to be asked to give his opinion of one particular bottle seems harmless enough. But the bottle contains firewater of a highly explosive nature - and, without intending it, Tony finds himself trapped on a one-way route into danger. From a harmless Sunday morning party at a racing stable and onwards to the edge of death, Tony comes nearer and nearer to a lethal adversary and, unexpectedly, to a fuller knowledge of his own true self. Set in the world of wine and spirits, PROOF is crafted with Dick Francis's usual high standard of drama, suspense and invention.