On the windswept Suffolk mudflats creaks a bird-hide, inside which hovers Roy Tunt, a prematurely aged, mildly obsessive-compulsive birder. With one more sighting - the elusive sociable plover - he will have 'twitched' the entire British List. Tunt has his shortwave radio, packed-lunch and a portrait of his ex-wife Sandra for company. Suddenly, in the midst of a conversation with Sandra's portrait, the hide door blows open and a bedraggled stranger - unshaven, edgy and bloodied introduces himsel...