English Flight Lieutenant Oliver Carmichael and German Baron Julius von Stulpnagel both have the same problem: how to persuade the other to betray his country. They think pretty, ambitious ex-convert-girl Mary Collins might help them―if her high-spirited red-haired sidekick Niamh Slattery doesn't get in the way. But what are the two of them doing in this down-at-heel corner of southern Ireland at the start of the Second World War when only a few months earlier, they'd been in Berlin together, try to sell forgeries of old masterworks?