Was Lenin connected with the German intelligence services and did he receive “millions of gold marks” from Germany for the collapse of Russia? Disputes about this have not subsided for a century. This book, based solely on documents that are beyond doubt, exposes both speculation and outright falsifications, reconstructing the true events that led to October 1917. What does the real picture of the relationship between Lenin and Alexander Parvus look like? Why exactly do they want to present him as the “Demon of the Revolution” and what was the “Parvus Memorandum”? What is his true biography and role in the victory of the Bolsheviks? Was Parvus involved in the transfer of funds from German intelligence to Lenin? What were the actual sources of financing for Lenin's party? Who, besides the Bolsheviks, returned from emigration through German territory in the spring of 17? Why did Ilyich’s arrival in the legendary “sealed carriage” become the reason for the construction of a huge number of legends and conspiracy theories? And indeed, did Lenin go to Russia as a foreign agent with the task of destroying the country and ensuring the defeat of the Russian army in the First World War?