English-American writer David Thomson was educated at Dulwich College and the London School of Film Technique. After seven years at Penguin Books, he became a Director of Film Studies at Dartmouth College, New Hampshire between 1977 and 1981. Perhaps best known for his magisterial Biographical Dictionary of Film, Thomson is a prolific writer on film including biographies of David O Selznick and Orson Welles, and two books on Hollywood: Beneath Mulholland: Thoughts on Hollywood and Its Ghosts and The Whole Equation: A History of Hollywood.