A writer accepts a bet that he cannot spend the night alone in a haunted castle on All Soul’s Eve. Once night falls at the castle, several who had been murdered therein return to life, reliving their deaths and seeking to kill the writer for his blood in a vain attempt to stay alive beyond that one night. Barbara Steele, as one of the living dead, tries to aid his escape from the castle.
CASTLE OF BLOOD synopsis-NOTE: In the European version the actors are listed by their real Italian names. In the US version they were given American-sounding names. Below they are referred to in their real Italian names.**On a cold dark night a man is seen outside the Four Devils Tavern in London, looking around. Entering, he goes downstairs where Edgar Allan Poe (Silvano Tranquilli) is reciting lines from one of his stories to Lord Thomas Blackwood (Umberto Raho) and the bartender. He listens for a moment, then introduces himself as Alan Foster (Georges Rivière), a reporter who has been trying to get an interview with Poe. Remembering him as having pursued him without response, he invites Foster to sit down. They discuss death and whether there is an afterlife. At one point, Sir Blackwood invites Foster to spend a night in his castle atop a cliff overlooking the sea at Providence. He must remain there from midnight to dawn, upon which he will receive 100 pounds sterling. Refusing the bet at first, Foster offers to try it for 10 pounds. He is told by both Blackwood and Poe that all those who tried before ended up dead. The most recent deaths were a newlywed couple who never returned but are buried in the castle cemetery. Foster agrees and Poe agrees to accompany them to the castle (which is a two-hour ride by carriage) during which he will interview Poe at length.As they arrive at the castle in the middle of the night, Poe asks Foster if he has any second thoughts before he is left alone. Having none, they bid him goodnight saying they will return in the morning. He waves as they leave. Going inside the gates, he wanders through the narrow cemetery. He sees only a black kitten hanging around. As he ascends the steps he finds a woman's garment which he picks up and carries inside with him.Inside he finds an old dusty castle, very dark and dank. Lighting a candelabra, he begins looking round. He hears a noise and goes to an open window. Looking out, he sees nothing and closes it. He taps his cane on an ancient dining table, covered in dust. He sets the candelabra down, removes his cape and hat and places them on the table. Picking up the candelabra, he explores more until he hears a large clock striking eleven. He looks at the grandfather clock, which shows 11:30. The pendulum appears still. As he turns away, he hears the clock strike once more. He looks and sees the pendulum swinging. As he approaches, it stops. He compares the time to that of his pocket watch and sees they are the same.As he looks into another room, he is startled by the image of a man. He goes to investigate and finds a full-length mirror. Tapping on it, he tells himself not to be afraid of his own reflection. He goes on and sees a portrait of Julia Alert (Margrete Robsahm). As he looks again, the portrait seems to be rippling. He tells himself its only a portrait and returns to the table, setting down the candelabra and pulling out note paper and pencil. He tells the portrait that he will make some notes and begins writing.All at once he hears music playing and gets up to see. In another room, he sees a couple dancing but as he approaches the door, it slams shut. Forcing the door open, he finds a dark music room with a harpsichord and harp. He lights a candelabra on the harpsichord, and noticing sheet music there, he sits and begins playing it. Suddenly we see a hand reaching out to touch his shoulder from behind. He is startled and turns to see Elisabeth Blackwood (Barbara Steele) who asks if her brother sent him. Rising, he tells her Lord Blackwood made a bet, but he didn't know anyone else would be in the castle or he wouldn't have accepted the bet. She tells him she fell out with her brother because she was in love with the gardener Herbert (Giovanni Cianfriglia) and Lord Blackwood didn't approve. He tells her he will leave rather than cause her misery, but she insists he stay and win the bet. She says that his room has been prepared. He is surprised and asks how she knew he was coming. She replies that her brother makes the same wager every year on this night and someone comes. As they continue walking, the candles go out just as Elisabeth laughs. He asks who blew them out and she answers only the wind. As they pass by the portrait of Julia, it seems to be rippling again. Elisabeth doesn't see the rippling, but asks about it. Again he tells her he will leave and gather his belongings. She sees the garment he brought in and picks it up, smelling it. He tells her he found it outside.They go upstairs to a bedroom where he sets the candelabra on a desk. Elisabeth sits on the bed and calls him to sit beside her. He comes close and she asks about the world outside. He tells her nothing has changed, but that it is a shame that the world cant share her beauty. She asks him if he finds her attractive and he admits he does. She asks about him and he tells her there is not much to tell. He is single, lonely and works in London as a writer.Suddenly Julia enters the room and says that they have not been introduced. Elisabeth warns Julia not to interfere, telling her that Foster was sent to her by her brother. Julia challenges that, asking Foster if it is true. He says only that he is there because of a wager. Elisabeth tries to get Julia to leave and not to cause any trouble. When she refuses, Elisabeth says that she will leave and does. Julia tells him it is late and that she will also retire. He asks if he will see her in the morning and she tells him no. When he asks if she is leaving, she tells him, no, I only said you wont see me in the daylight. She leaves and he ponders all that was said.Outside in the hall, the two women talk. Elisabeth tells Julia that he belongs to her, that she is in love with him, and they will be happy together. Julia tells her she will not be happy and that he will soon learn the secret of this place. Julia threatens to tell him. Elisabeth is upset and runs off.In his room, Foster removes his coat and looks at a small stack of books on the desk. He picks one up and opens it. The title page reads: CARMUS: ELEMENTS OF METAPHYSICS MEDICINE. He goes to the bed to begin reading, but is distracted by a noise coming from the door. He notices the door handle slowly opening. He rises and gets his derringer and stands by the door. When he pulls the door open, he sees Elisabeth, who says that he is still awake. He invites her in and she goes to the bed, where she sees the book. She says that she will leave, so he can read it. He persuades her to remain, telling her how much he likes her and is attracted to her. She answers that she is pleased to hear this and that she wants his body warmth. She asks him to kiss her and embrace her. They embrace and she begs for his kisses and for him to warm her.Meanwhile Julia is listening outside the door. She remarks to herself that she tried to warn Elisabeth but was unsuccessful. She turns to go and runs into William (Benito Stefanelli) who asks about Elisabeth. Julia tells him she will inform Herbert.Alan and Elisabeth are seen in bed, where he expresses his joy of meeting her. She tells him she cant be part of his world because he is in the present, while hers is in the past. He tells her that he doesn't believe that, resting his head on her chest. As he caresses her arm, he suddenly notices that she has no heartbeat. He looks at her and calls her name. She answers and he tells her that he was afraid her heart had stopped beating. She tells him that her heart has not beaten for ten years since she died.Suddenly Herbert bursts into the room with a knife and stabs Elisabeth. He runs from the room with Alan following. Alan shoots him and he falls. As he watches, the body vanishes. Alan returns to the bedroom to find it empty. He begins calling for Elisabeth, going room to room. All at once he encounters Dr. Carmus (Arturo Dominici), who tells him that he will be unable to find Elisabeth. They go into his study where he offers Alan a drink of whiskey. He explains about the three parts of life. The first part (the weakest) is the human body. Second is the spirit within, and third are the senses, which he explains live on after death in some bodies. Alan scoffs at this and Carmus tells him he will prove it. Removing a small case from a cabinet, he produces a small venomous snake which he puts on a table. Cutting off the head, he tells Alan to note how the body continues moving without the head and the head, though severed from the body is still dangerous enough to bite. Alan says that may be true for reptiles, but he doesn't believe its the same for humans. Carmus takes him to the window, where he points out below the graves of Elisabeth and the others. He tells Alan that tonight they each will live out the last five minutes of their lives until they died.They ascend a staircase and Alan begs for more details about Elisabeth. Suddenly the clock chimes and Carmus tells him that the time is at hand and that words mean nothing. He is told to watch below. The room plays back the evening of a festive party where Elisabeth was dancing with her husband William, who stops and goes to get her a drink. As she waits by a window, Herbert knocks from outside. She opens it and he insists on seeing her. She tells him she will try to see him later and closes the window. Julia sees her talking to Herbert but says nothing. William brings the drink to his wife. Sir Blackwood and his wife approach and inform their hosts they must leave. Escorting them outside, Elisabeth then turns aside to talk to Herbert. He takes her aside into the stable and demands her loyalty, saying that she promised herself to him while her husband was away. Suddenly the dream fades and Carmus tells Alan that their deaths will be replayed tonight, as every year at this time.He takes Alan into the bedroom where William and Elisabeth are in bed together. Herbert comes in and strangles William. He then turns on Elisabeth to kill her, but he is knocked out by Julia with a candlestick. He falls with half his face indented from the blow. Julia turns to comfort Elisabeth, telling her she is now safe. Elisabeth reaches for a knife and stabs Julia. Getting out of bed, Elisabeth views the three dead bodies and screams. Alan says he doesn't want to see anymore, and that it must be a trick. Carmus tells Alan that there is more for him to see.Alan sees that the bedroom is now empty. No bodies are present. He begins searching again, calling for Carmus and Elisabeth. When he reaches the study of Carmus, the door opens and he goes in. Next he sees Carmus, who takes a drink of whiskey. Hearing a banging noise, Carmus takes a candelabra and goes from door to door and window to window until he finds the door that keeps banging open and shut. Opening it, he goes downstairs into the crypt room. He passes by an ornate coffin showing a man and a dog to a stone bier. He slides the cover off to see a decomposed woman inside. As he watches, she begins to breathe, then converts into a mist. Going back to his study, he sits down and begins to write. Suddenly Herbert enters and kills him, then bites to suck blood from his neck. At this point Carmus comes back into the room, telling Alan that he has seen how Carmus met his end. When Alan looks at the desk again, no one is there. He picks up the paper Carmus wrote on and reads: Blood is the fountain of life; only blood brings back the dead to life; we will drink from this fountain!!Alan hears ghostly laughter and pulls out his derringer. Realizing the gun will do no good, he drops in on the desk and exits the study. Soon he hears more laughter from outside. As the front door opens, he hides to watch. The bride (Sylvia Sorrente) and groom enter to spend their wedding night.
As they go upstairs, Alan calls out to them to warn them they are going to their deaths, but realizes they cant hear him and there is nothing he can do but watch. He notices the door standing open and goes to it. It closes and he tries to open it, but the handle breaks off. He realizes he is trapped. He begins calling out loud, hoping Carmus can set him free while he is still alive.Upstairs, the amorous couple is kissing but hears a noise. He goes to investigate and she begins to undress by the fire. As she gazes at her reflection in the mirror, we see Herbert approach from behind. Seeing him, she screams as he attacks. Her husband rushes in to find Elsi dead, and is killed by Herbert. The scene vanishes and Alan sees the couple approaching him. They tell him it is now his turn. He runs downstairs and sees Carmus, who tells him that he is next. He tries to run, but each of them are closing in on him. All at once he sees Elisabeth, who tells him which way to run. She says they need his blood to be able to live again next year for a few minutes.
Alan runs down a hall and is trapped as the others approach. At the last second, Elisabeth opens a door and leads him through. Again she tells him they need his blood but if he can escape they will die. He tells her to come with him, grabbing her arm. She cries no, that she cannot enter his world. He insists, pulling her along through corridors. She continues to tell him that she cant come with him because she is dead. Finally they go outside where she collapses, telling him goodbye. Her body deteriorates completely away until she is only dust. He stumbles through the graveyard, hearing the voices of the others calling him. As he comes under the tree with the low branches, he sees the bodies of the others hanging from high limbs. They all tell him there is no escape and they will live by his blood. He makes it to the gate and steps outside, thinking he is safe. Suddenly the gate closes and a metal rod pierces him through, killing him and holding his body upright.The next morning Poe and Blackwood arrive in their carriage and Poe remarks how he is standing there. But when they approach they see he is dead. Blackwood takes money from Alans wallet, telling Poe he must collect on the debt. Blackwood says he will arrange for burial in the cemetery. Poe says he can now write the story, but no one will believe it.The voices of Elisabeth and Alan are heard talking to each other. She says you stayed with me, Alan. He replies: yes, Elisabeth.