Marcel Raymond Theroux is a British-American novelist and broadcaster. He wrote A 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.

Louis Sebastian Theroux is a British-American documentarian, journalist, broadcaster, and author. He has received three British Academy Television Awards and a Royal Television Society Television Award.