Who would ever to think to attempt an escape from a POW camp by using a ouija board.  That's exactly what happened here.  Most of this book take place in a World War I POW camp in Turkey.  Here 2 British POWs  begin making these plans to use the ouija board. But alas, there was a change of plans necessitated  by circumstances.  The change of plans that would come about would see these 2 British POWs switch to faking insanity in the hopes that they would be a part of a prisoner exchange among prisoners who were sick or injured.  That's really as much as I should tell you as I feel like I have already told you too much.