"The Key" is a 2003 film directed by Nicolas Roeg, known for its exploration of themes like desire and obsession. The story revolves around a man who discovers a mysterious key that unlocks a hidden world of eroticism and fantasy, leading him into a complex relationship with a woman who shares his interests. The film features a blend of drama and psychological elements, showcasing the characters' struggles with their innermost desires. With its unique narrative style, "The Key" invites viewers to reflect on the nature of intimacy and the boundaries of love, making it a thought-provoking experience.