"Gumnaam" is a 1965 Indian thriller film directed by Raj Khosla. The story revolves around a group of people who find themselves stranded on a mysterious island after their plane crashes. As they explore the island, they encounter a series of strange events and a masked figure, leading to suspense and intrigue. The film features popular songs, including the famous track "Gumnaam Hai Koi," sung by Mohammad Rafi. It is known for its engaging plot and memorable music, making it a classic in Indian cinema. The film's unique blend of mystery and drama has earned it a lasting place in Bollywood history.