James Neville Mason (known as James Mason; May 15, 1909 – July 27, 1984) was an English actor who made a significant impact on both British and American cinema. His acting career began in the 1930s, where he initially gained recognition for his stage performances in London's West End. He made his film debut in 1935 with the British film "Late Extra," marking the start of his illustrious on-screen journey.