The Secret of Blood Island (movie, 1964)

Based on the true story of a British secret agent, shot down over Malaya near to a Allied POW forced labour camp. There she is hidden, disguised as a youthful prisoner, until her escape can be effected. The costs of keeping her identity secret fall on all the POW's as the Japanese embark on a policy of ruthless terror to extract her and the focus shifts to the conflicts of the group' s collective concerns against the necessities of personal survival.