text: Die Mission (1965, The Mission, first published in Great Britain by George G. Harrap & Co. Limited, London, 1966)
  Christoph und sein Vater (1966, Christopher and His Father)
  Im Jahre Null (1966)
  Das Netz (1969, The Poisoned Stream)
  Wien, so wie es war (1969)
  Wie einst David. Entscheidung in Israel (1971, Proud Zion, a.k.a. In King David's Footsteps: Decision in Israel. A Personal Account)
  Erfahrungen (1973)
  Palazzo (1975, Palazzo)
  Leben für den Journalismus (München : Droemer Knaur, 1976. )
  Film adaptations
  The Cross of Lorraine, directed by Tay Garnett (1943, based on the novel A Thousand Shall Fall)
  The Ambassador, directed by Harald Braun (West Germany, 1960, based on the novel Die Botschafterin — under the pen name Hans Wolfgang)
  , directed by  (West Germany, 1961, based on the novel Frau Irene Besser — under the pen name John Richler)
  The Devil's Agent, directed by John Paddy Carstairs (UK, 1962, based on the novel The Devil's Agent)
  , directed by Géza von Radványi (West Germany, 1966, based on a story by Hans Habe)
  The Mission, directed by  (West Germany, 1967, TV film, based on the novel The Mission)
  The Net, directed by Manfred Purzer (West Germany, 1975, based on the novel The Poisoned Stream)
  Mission to Evian, directed by Erika Szántó (Hungary, 1988, based on the novel The Mission)