Jan Valtin was the alias of Richard Julius Hermann Krebs (December 17, 1905 - January 1, 1951), a German writer during the interwar period. He settled to the United States in 1938, and in 1940 (as Valtin) wrote his bestselling book Out of the Night.
Krebs became active in the Communist movement as a boy, when his father was involved in the naval mutiny that heralded the German Revolution of 1918–19. In 1923, he saw action in the failed Communist insurgency in Hamburg. Sometime after this he joined the German Communist Party, but was later expelled.
In 1926, Krebs entered the United States illegally and settled in California. He spent 38 months in San Quentin State Prison for attempting to murder a merchant navy seaman during a brawl, then was deported to Germany in 1929. He worked as a seaman until 1934, when he was arrested and tortured, and acted as a witness for persecution in a trial that brought to the conviction of a fellow German seaman accused of treason.
In 1938, the settled in the United States once again - this time under his most famous alias, Jan Valtin - where he published the highly publicized autobiography Out of the Night. In the book he described in detail the actions he supposedly had carried on as a secret agent of the Soviet GPU. The 1926 attempted murder was described by Krebs/Valtin as a GPU operation. The book received great critical acclaim. A 1940 review for the Saturday Review of Literature reads: "No other books more clearly reveals the aid which Stalin gave to Hitler before he won power". As a result, he Valtin/Krebs was invited to testify before the House Un-American Activities Committee as regards Soviet secret activities in Europe.
Valtin/Krebs married again, before 1941, to Abigail Harris, an American. In November 1942, Krebs was also indicted as a Gestapo agent. He was arrested in December 1942 and found innocent in May 1943. The Los Angeles court record revealed that the 1926 crime had no political purpose. This event marked the end of Krebs/Valtin's career as a "Soviet expert". The New York Mirror said about his book Out of the Night: "In effect, the decision means he perpetrated a huge literary hoax."
In August 1943, Krebs was drafted as an infantryman and deployed in February 1944 to the Philippines in fighting the Japanese in the Pacific War. In 1946, his book Children of Yesterday, an anecdotal history of the 24th Infantry Division was published, describing in graphic detail the horrors of the fighting and everyday life of the division’s troops.
He was granted citizenship in 1947 and died in 1951. The Board of Immigration Appeals declared: "His life has been so marked with violence, intrigue and treachery that it would be difficult, if not wholly unwarranted, to conclude that his present reliability and good character have been established. [...] Within the past five years the subject has been considered an agent of Nazi Germany. On the record before us it appears he has been completely untrustworthy and amoral."
- Freda Utley, Saturday Review of Books, n. 23, 1940, p. 176.
- New York Mirror, November 25, 1942.
- John V. Fleming, The Anti-Communist Manifestos. The Four Books that Shaped the Cold War, W. W. Norton & Company, 2010, p. 167.