The Invisible Front was the code name used by the Soviet Interior Forces for the armed resistance in the occupied territories of the former Soviet Union. This resistance sprang to life without almost any outside support in 1940 and again in 1944, continuing in various forms, armed and unarmed, until the fall of the Soviet Union in 1991. This is the story of one of the twentieth centuries most significant anti-soviet resistance movements, told through the words and experiences of its leader, Juozas Luksa and his fellow Forest Brothers.