Career
His name is closely associated with the Venlo Incident in 1939. Stevens mastered Arabic, Hindustani, and Malay, and until 1939 worked as an Intelligence Officer in India. That year he was transferred to Europe and put in charge of the SIS station in The Hague.
His second language was Greek and he also spoke excellent German, French and Russian but he had no specific training or experience of intelligence gathering in Europe.
In November 1939 he was abducted to Germany in the Venlo Incident with Captain Sigismund Payne Best and it has been suggested that he may then have revealed vital secrets about the Secret Intelligence Service under interrogation. Nazi propaganda portrayed Best and Stevens as the alleged masterminds of the Beer Hall attempt to assassinate Adolf Hitler by Georg Elser.
The two officers were then imprisoned for over 5 years in Sachsenhausen and Dachau concentration camps before their release in April 1945. Stevens left the army as a lieutenant colonel, having been promoted to that rank during his captivity.
He then worked as a translator at North Atlantic Treaty Organization in Paris and London between 1951 and 1952.
He died of cancer in 1967.