the company moved to 3rd floor offices at 89 Boulevard Haussmann at the insistence of Alfred Corbin, who believed their current location was rife with thief's. Expenses Both the Simex and Simexco companies flourished and made substantial profits in return. In 1941, the net profits of both Simex and Simexco reached 1,616,000 Francs and in 1942, 1614000, after the costs of running the network were deducted. Trepper kept strict accounts as he had to submit them to Moscow for audit. His group were paid in Dollars, the traditional currency used by Moscow for their agents. In 1939, Trepper received 350 dollars a month, but this was cut to 275 dollars a month, when his wife and children were to Russia. His agents, Makarov, Gurevich and Grossvogel each initially received 175 dollars a month, before it also upped to 275 dollars. Trepper also had to account for monies spent in each location where there was a network. From 1 June to 31 December, Trepper spent 5650 dollars in Brussels and 9421 dollars in Paris. These were only daily expenses. Trepper used to the money earned from Simex and Simexco to spend lavishly. This spend included bribes and money spent for the upkeep of the Château de Billeron and large daily expenses to maintain the veneer of a successful businessman. Trepper kept the accounts locked in a large clock in house at Verviers. To insure against financial ruin, he kept a special reserve of monies in the form of 1000 gold dollars in jars at a house of a trusted agent. Discovery and arrest On 13 December 1941, the German radio counterintelligence organisation, Funkabwehr, discovered the safehouse apartment at 101 Rue des Atrébates in Brussels, that led to the arrest and among others of Gurevich's radio operator, Red Army Lieutenant Anton Danilov. Gurevich himself hid in the house of Nazarin Drailly to evade the Gestapo, while he made arrangements to transfer ownership of the organisation to Drailly, before leaving for Paris in the same month. When he left, Drailly took over management of the firm. On the 19 November 1942, the offices of Simexco was raided by the Gestapo after several months of surveillance. The Simex office in Paris was raided in the same day. When the Gestapo entered the Simexco office they found only one person, a clerk, but managed to discover all the names and addresses of Simexco employees and