Sire Alain de Maletroit, plots revenge on his younger brother Edmond for stealing Alain's childhood sweetheart, who died giving birth to Edmond's daughter Blanche. Alain secretly imprisons Edmond in his dungeon for 20 years and convinces Blanche that her father is dead.
Alain intends to further debase Blanche as revenge against Edmond. Alain tricks a high-born drunken cad, Denis de Beaulieu, into believing he has murdered a man. Denis escapes a mob by entering the Maletroit chateau by an exterior door which has no latch on the inside. Alain makes Denis a captive intending to force the delicate Blanche into marriage with him.
Alain goes to the dungeon to torture Edmond with the news Blanche will be married to Denis, an unworthy rogue. After Alain leaves, Edmond asks the family servant Voltan to kill Denis before the wedding. However, Denis shows unanticipated redemptive qualities and he and Blanche fall in love. When Voltan comes to kill Denis, Blanche pleads with Voltan to spare his life and help him escape.
At the wedding, Denis meets an old acquaintance from France, Count Grassin, who agrees to help the newlyweds escape. But when they enter their "escape carriage", it contains the Count's dead body, murdered by Talon. In a fight in a cemetary, the newlyweds are captured and returned to the castle. Voltan is shot and wounded and left to die, but he does kill two henchmen first.
Their attempts to escape are foiled by Alain, who then seals Edmond, Blanche and Denis in a stone cell and starts a waterwheel that presses the cell walls inward to crush them to death. Voltan fights Alain and gets the key to the dungeon and pushes Alain into the waterwheel, temporarily stopping the crushing walls. Wounded by the guards, Voltan struggles to the dungeon and, with his dying breath, gets the key to Denis just as the walls start moving in again. Denis, Blanche and her father escape the cell. Denis and Blanche decide to stay together and Edmond has the strange door removed from the chateau.
Film historian Tom Weaver described The Strange Door as Universal re-entering the horror film business, describing the film as a "combination chiller-costume melodrama".[5] The film was initially announced as The Door which remained its title during production.[6] The film is based on "The Sire De Malétroits Door" by Robert Louis Stevenson which was a short story initially published in Temple Bar magazine in 1878.[5] Weaver described screenwriter Jerry Sackheim's adaptation of the story as including various Gothic archetypes into the story with peepholes in the walls, ghostly wailings in the night and a torture chamber leading the film to be "a well-disguised remake of Universal's The Raven (1935)."[6]
The film's director was Joseph Pevney, a former vaudeville performer who performed on Broadway and entered the film industry in 1946 in Nocturne.[6] He made his directing debut in 1950 with his crime film Shakedown.[7] Pevney later stated to Weaver that he did not know why he made The Strange Door, declaring that "I was a new director and I was assigned movies in those days and they told me, "This is what you're gonna do." I'd do three or four pictures a year, when I started. But as I stayed with the studio and people got to know me [...] I was able to turn things down."[7]
Among the cast was Charles Laughton who began work on the film following his ten-performance Bible-reading tour.[7] Laughton earned $25,000 for his role in the film.[7]Sally Forrest who played Blanche de Maletroit stated she did not recall how she got the part, stating "I guess I went out on an interview and got it" and stated later that horror films were not her favourite, but she had not seen many films at that point as her family was very poor growing up.[8] Forrest was out on loan from MGM for her part in the film.[8]Richard Stapley who played Denis De Beaulieu had played some stage rolls in New York and made his film debut in The Strange Door.[9]Robert Douglas was the first actor considered for the role of Corbeau, after he had played many villainous roles in several Universal feature films.[10]
Filming
The Strange Door was scheduled to be made in 18 days and began production on May 15, 1951.[11] Production ended on June 5.[12]
Release
The Strange Door had a sneak preview at Los Angeles's United Artists Theatre following a screening of the Joel McCrea Western film Cattle Drive.[13] Comment cards from the audience had 19 of them rating the film as "Outstanding", 24 as "Excellent", 26 as "Very Good", 17 as "Good", 5 as "Fair" and 2 as poor.[14] Among the comments made by the patrons, comments included on the violence on the film ("Excellent acting-interest plot without being too gruesome", "Maybe a little too much on the gory side") the actors ("Keep track of Richard Stapley", "Did not like Richard Stapley", "Sally Forrest stinks"), and the overall quality of the film ("Best picture I have seen in many months", "Kept you on the edge of your seat", and "This is the first picture attended in year since bought teleivision. Pictures will have to be more exceptional before I come again."[14]
The Strange Door was initially set up as a November 1951 release.[15] The film had several early pre-release screenings including Shea's cirtuic theatres in Mississippi on October 31 and in Shea's Theatre in Jameston, New York.[15] In the first week of November, Universal started to release The Strange Door around the United States, specifically in California, the Northwest, the Midwest and the East Coast.[15] 75% of the screenings of the film were seen on Double bills.[16]
The Strange Door, along with Night Key, Tower of London, The Climax and The Black Castle, was released on DVD in 2006 by Universal Studios as part of The Boris Karloff Collection. In 2019, Kino Lorber's Blu-ray release featured a fact-filled audio commentary by Tom Weaver, Dr. Robert J. Kiss and David Schecter.
