A Bitter Field - David Donachie

1938: While Hitler sets his sights on the Sudetenland, not everyone in Britain is willing to appease him. Convinced that the Fuhrer's land-hunger is insatiable, the head of the SIS recruits Cal Jardine to help him prove that Czechoslovakia is threatened with invasion. As jealousy and mutual suspicions within secret service ranks make it impossible for Jardine to tell friend from foe, he rediscovers old friends of dubious loyalty and makes new enemies of untested ruthlessness. This is the final installment in Ludlow's sweeping series set in the pre-WWII European powder-keg.