An absorbing story of the Polish Underground, exceedingly timely, and important as background for contemporary and immediate history. Karski, himself one of the leaders, played an important part from the invasion of Poland on. He belonged to the class of gay and confident young officers in the reserve; he was caught in the ""fourth pertition of Poland"" within the Russian invasion lines, transferred, only to find himself a prisoner of the Germans -- and again escaped, this time into the Underground, with its strangely unreal life. This is, perhaps, the fullest authentic picture of Underground operation and organisation that it has been possible to publish. It gives, too, a grim closeup of Poland under German occupation, of concentration camp and murder mill, of Black Market and starvation tactics -- and of the incredible courage and imagination and will to fight that made possible what -- at present writing -- seems like an enormous potential for ultimate victory. Completely unpolitical -- wholly of the Underground.