Slipstream is a 1989 post-apocalyptic science fiction adventure film. The plot has an emphasis on aviation and contains many common science-fiction themes, such as taking place in a dystopian future in which the landscape of the Earth itself has been changed and is windswept by storms of great power. There are also numerous sub-plots, such as free will and humanity amongst artificial intelligence.
Holmes's brother, Mycroft, seeks his help in deciphering the story a man tells about being kidnapped and forced to translate for an injured Greek. Holmes investigates the disappearance of Paul Kratides, abducted by two villains, Latimer and Kemp, with the aim of forcing him to sign a document releasing his sister Sophie to marry Latimer.