Marcel Raymond Theroux (born 13 June 1968) is an English novelist and broadcaster. He wrote The Stranger in The Earth and The Confessions of Mycroft Holmes: A Paper Chase, for which he won the Somerset Maugham Award in 2002. His third novel, A Blow to the Heart, was published by Faber in 2006. His fourth, Far North, was published in June 2009. His fifth, Strange Bodies, was published in May 2013. He has also worked in television news in New York City and in Boston.
He is the elder son of the American travel writer and novelist Paul Theroux and his then-wife Anne Castle. His younger brother, Louis Theroux, is a journalist, documentarian, and television presenter.
Marcel Theroux was born in 1968 in Kampala, Uganda, where his American-born father, Paul Theroux, was teaching at Makerere University. His mother is Anne Castle, an English woman. The family spent the next two years in Singapore, where his father taught at the National University of Singapore. After their return to England, Theroux was brought up in Wandsworth, London. After attending a state primary school, he boarded at Westminster School where his best friend was Nick Clegg. He went on to study English Literature at Clare College, Cambridge. He won a fellowship to study International Relations with a specialisation in Soviet and East European Studies at Yale University.
He lives in London and is married. His paternal French surname originates from the region around Sarthe and Yonne in France. It is quite common in francophone countries and is originally spelled Théroux. His father, born and raised in the United States, is of half French Canadian and half Italian descent.