Secret Admirer (2001)

Sadomasochistic sex filmed in London, as a woman becomes more deeply involved in perverse activities. ...Secret Admirer ( Shades of Darkness & Beyond )

Based on a true story. Karen is a woman with a taste for excitement, bored with the daily routine. Dominic is attractive, powerful, seductive; a sexy opportunist who tricks his way into her life and invites her to join him on a roller coaster ride of thrills, bizarre games and excitement. He is also a man with a dangerous side; a ruthless control freak who knows what he wants and will stop and nothing to get it. Together, they explore the furthest, darkest reaches of his wild fantasies - a journey of self-discovery that takes Karen to her limits - to the deepest shades of darkness and beyond.