Nearly two years later, on February 28, 1933, the day after the Reichstag fire, Hans Litten was taken into so-called "protective custody"—on the same day as Egon Erwin Kisch, Ludwig Renn, and Carl von Ossietzky. For him, this marked the beginning of an ordeal through prisons and concentration camps. For Irmgard Litten, who until then had considered herself apolitical, it marked the beginning of a years-long, arduous struggle against the Nazi regime. The struggle of a mother for her son.

Irmgard Litten - Born in Halle/Saale, Germany, on August 30, 1879, into a respected academic family, Irmgard Wüst studied art history and married Fritz Julius Litten, a noted University of Königsberg law professor of Jewish origins who had converted to Lutheranism.
Her son, Hans Achim Litten, became a well-known attorney who specialized in defending controversial Leftists in the often biased courts of Weimar Germany. As a consequence of her family being perceived by Nazis and nationalists as both racially and politically "un-German," even before 1933 Irmgard Litten began to feel the effects of xenophobia and ideological intolerance.
The Nazi seizure of power was a catastrophe for the Littens: Fritz was dismissed from his academic post, and much worse, her son Hans was thrown into Dachau concentration camp as a "Marxist sympathizer." Litten used all the stratagems at her employ to secure her son's release. In the early years of the Nazi regime, world opinion was still deemed important, because the fragile German economy could be threatened by boycotts. As a consequence, Litten hoped for sufficient foreign pressure to effect her son's liberation from Dachau. For several years she worked to free him, using her contacts within Nazi Germany, as well as bringing the case to the attention of the foreign press.