The Captive Heart

1940. With the Nazis having overtaken much of France, many British military men, officers and soldiers alike, have been captured in the process and sent to POW camps. Among those is Captain Geoffrey Mitchell, or so it appears on the surface. Mitchell is really Captain Karel Hasek of the Czechoslovakian Army, he who escaped from a concentration camp. He came across Mitchell's dead body in a battlefield, and stealing his papers and clothes assumed his identity for his own safety in the Nazis still pursuing him. He is able to blend in in speaking perfect English with no Czechoslovakian accent having been British educated. But also speaking perfect German as do many Czechoslovakians, his fellow POWs at the camp suspect that he may be a German spy. Beyond the regular perils of this internment, Hasek also discovers that one of the Gestapo officers frequenting this camp, Forster, had a similar role at the concentration camp where he was a prisoner, Hasek almost guaranteed to be executed if Forster remembers him. Partly to maintain his cover, Hasek, like most of the married POWs or those in committed relationships, feels compelled to reply to the correspondence of "his" i.e. Mitchell's wife, Celia Mitchell, he unaware from that initial letter from her that the Mitchells' marriage was at that time all but over. But in their correspondence, Hasek eventually falls in love with Celia, and she in turn falls in love all over again with Geoffrey, unaware that the man with who she is corresponding is not her husband.