克格勃曾经是世界上最令人恐惧的也是最庞大的情报机构之一。巅峰时期,它的间谍人数竟然达到数千人,遍布苏联本土和世界其他地方。然而,近几年揭秘的克格勃绝秘文件显示,冷战期间,苏联和美国在人类意念的无形空间也进行了一场不可思议的情报争夺战,其中就包括克格勃对超常现象的研究—— The KGB was once one of the most dreaded and largest intelligence agencies in the world. At its peak, the number of spies in the country reached thousands, spreading all over the Soviet Union and elsewhere in the world. However, the secret KGB files revealed in recent years show that during the Cold War the Soviet Union and the United States also carried out an incredible battle for intelligence in the intangible space of human ideas, including the KGB’s study of the extraordinary phenomena -