The "Alien: Quadrilogy" Blu-ray set includes all four films in the Alien franchise directed by David Fincher, James Cameron, Jean-Pierre Jeunet, and Ridley Scott. This science fiction horror collection is produced by 20th Century Fox and is rated NR. Fans of the Alien series can enjoy high-quality visuals and special features with this Blu-ray set, making it a must-have for any sci-fi enthusiast's collection.