Quatermass and the Pit (or as it’s known in the US ‘Five Million Years to Earth’) is a 1967 British science fiction horror film from Hammer Film Productions, a sequel to the earlier Hammer films The Quatermass Xperiment and Quatermass 2 (see General Witchfinders episode 17 for more details). Like its predecessors it is based on a BBC Television serial, of the same name, written by Podcast hero Nigel Kneale. It was directed by Roy Ward Baker (who is responsible for such highs as A Night to Remember And such lows and The scars of Dracula and The Legend of the 7 Golden Vampires - see episodes 28 and 31 respectively)  And this incarnation stars Andrew Keir (featured in Cleopatra, Dracula: Prince of Darkness and Daleks' Invasion Earth 2150 A.D.)  in the title role as Professor Bernard Quatermass, replacing Brian Donlevy, who played the role in the two earlier films. James Donald, Barbara Shelley (also in Dracula: Prince of Darkness and The Gorgon) and Julian Glover (whos been in some little known films called Indiana Jones and the Last Crusade, The Empire strikes back, Games of thrones, several Doctor Who stories and load of other stuff including being the voice of a giant spider in Harry Potter) they appear in co-starring roles.Nigel Kneale wrote the first draft of the screenplay in 1961, but difficulties in attracting interest from American co-financiers meant the film did not go into production until 1967. The director, Roy Ward Baker, was chosen because of his experience with technically demanding productions such as A Night to Remember; this was the first of six films that he directed for Hammer. Andrew Keir, playing Quatermass, found making the film an unhappy experience, believing Baker had wanted Kenneth More to play the role. Owing to a lack of space, the film was shot at the MGM-British Studios in Elstree, Borehamwood, rather than Hammer's usual home at the time, which was the Associated British Studios, also in Elstree.The plot of the film verison was condensed to fit the shorter running time, the main casualty being the removal of a subplot involving a journalist named James Fullalove, and the climax was altered slightly to make it more cinematic. The setting for the pit was changed from a building site to the London Underground. The closing scene of the television version, in which Quatermass pleads with humanity to prevent Earth becoming the "second dead planet", was also dropped, in favour of a shot of Quatermass and Judd sitting alone amid the devastation wrought by the Martian spacecraft.The script was sent to John Trevelyan of the British Board of Film Censors in December 1966. Trevelyan replied that the film would require an X certificate and complained about the sound of the vibrations from the alien ship, the scenes of the Martian massacre, scenes of destruction and panic as the Martian influence takes hold and the image of the Devil.It has been suggested that Tobe Hooper's 1985 Lifeforce is largely a remake of Hammer's Quatermass and the Pit. In an interview, director Tobe Hooper discussed how Cannon Films gave him $25 million, free rein, and Colin Wilson's book The Space Vampires. Hooper then shares how giddy he was: "I thought I'd go back to my roots and make a 70mm Hammer film.Three decades on, Andrew Keir reprised the role of the Professor in "The Quatermass Memoirs", a five-part docudrama scripted by Nigel Kneale and transmitted on BBC Radio 3 in March 1996.