Investigative journalism
Semyonov was one of the pioneers of "Investigative journalism" in the Soviet periodicals. Thus, in 1974 in Madrid he managed to interview a Nazi criminal, the favourite of Hitler Otto Skorzeny, who categorically refused to meet any journalist before. Then, being the "Literaturnaya Gazeta" newspaper correspondent in Germany, the writer succeeded in interviewing the reichsminister Albert Speer and one of the SS leaders Karl Wolff.