As the veteran interrogator says right at the start, it’s all about psychology! A group of intrepid Soviet soldiers are being briefed on a very cunning plan to construct, section by section, a bridge that will lie under the waterline - hopefully undetected - thereby allowing a counter-offensive by their forces over a wide, fast flowing, river. With the Nazis all around them, their guide “Lisa” (Marguerite Chapman) and “Kulkov” (Paul Muni) find themselves in the centre of a bombing raid that sees them and seven of their enemies trapped in a cellar. Though they are outnumbered, they have the guns...