the successful blackmail of former s.s. gruppenfuhrer sonntag , living under the name of santos in havana , yielded a meager $ 100,000 -- - unfortunately all the man possessed -- -and the assassination of peringue , the french heavy-water specialist who went over to the communists through berlin added , thanks to the importance of his knowledge and the fact that we got him before he had talked , one billion francs from the deuxieme bureau .