Hans Davidsen-Nielsen (born 1968) is a journalist and author. He has written two nonfiction books about the Danish intelligence services story, A higher Cause (2006) and War of the Spies (2008).

Previously he co-authored the books The Defence - the Danish  SS Doctor at Buchenwald (2002) and The Dane at Guantanamo - the  personal story (2004). He works as a journalist at the Danish newspaper Politiken and Death of the Hypochondriac is his literary debut.
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