Child psychologist Carter Nix is a loving and caring family man, but under this appearance lies a dark and troubled past. Grappling with the consequences of this past on his own psyche and the influence of his returning father and violent brother Cain, Carter becomes involved in a series of murders and kidnappings. Meanwhile, his wife Jenny rekindles an old love affair, placing herself in the crosshairs of her increasingly unstable husband.
Reports of strange activities out by the Old Willow's place signal new adventures for Kelton the Cop & Co. An apparent mystic, Dr. Acula is engaging in rituals designed to raise the dead. But he may get more than he bargained for...
Seven students answer an advertisement to participate in an experiment to explore how the sensation of pain can be eliminated. Arriving at a secluded institute, they are welcomed by mysterious scientist JB Divay. Initially, JB's fascination with hypnosis, clocks and cactus plants are dismissed by the group as mere eccentricities. But as the students begin to disappear one by one, they begin to question JB's true intentions.
Lost Caverns Resort Hotel bellhop Freddie Phillips gives an empty threat to one attorney Amos Strickland, and is shortly fired. When Freddie visits his guest's suite to apologize, he finds Strickland dead of a gunshot wound. As the investigators file in, Freddie becomes the scapegoat of the guests in the hotel, who all had a bone to pick with Strickland. It's now up to Freddie and Detective Casey Edwards to find out who the real killer is, all the while avoiding the many vigorous and violent villains staying at the resort.
A scientist working on cures for rare afflictions, such as a bone softening agent made from molds to allow him to correct the spinal deformity of his nurse, finds the physical causes of lycanthropy in wolf-man Larry Talbot and of vampirism in Count Dracula, but himself becomes afflicted with homicidal madness while exchanging blood with Dracula.
Dr. Hohner, theatre physician at the Vienna Royal Theatre, murders his mistress, the star soprano when his jealousy drives him to the point of mad obsession. Ten years later, another young singer reminds Hohner of the late diva and his old mania kicks in. Hohner wants to prevent her from singing for anyone but him, even if it means silencing her forever.
A frustrated detective deals with the case of several gruesome murders committed by people who have no recollection of what they've done.
A young woman, Margaret Dauncey, is caught between the forces of a charlatan magician, Oliver Haddo, whom she is unable to resist, and the love of a handsome surgeon, Arthur Burdon, who has saved her from being a helpless cripple by performing a delicate operation on her spine.
Rasputin, a crazed and debauched monk wreaks havoc at the local inn one night, chopping off the hand of one of the drinkers. As the bitter locals plan their revenge, the evil Rasputin works his power over the beautiful women who serve at the Tsar's palace. Even the Tsarina herself is seduced by his evil ways and, as his influence begins to dominate government policy, there is only one course of action left... to destroy him before he destroys them all.
Posing as a hip medium, a bloodthirsty old-world undead gent attracts young lovelies to his mansion by holding séances in modern-day Los Angeles.
Jerry, his girlfriend Angela, and their friend Harold take a trip to a local seaside carnival, but when the carnival's fortune teller, Madame Estrella, predicts death for someone close to Angela, strange things begin to happen.
Dr. Eric Vornoff, with the help of his mute assistant Lobo, captures twelve men for a grisly experiment; His goal to turn them into supermen using atomic energy. Reporter Janet Lawton, fiancée of the local lieutenant, vows to investigate Vornoff's supposedly haunted house.
Two psychics place a prostitute under hypnosis in order to learn about her past-life experiences. When they unwittingly send her back in time, she finds herself in the Middle Ages, suspected of being a witch and on the verge of being executed.
Three stories adapted from the work of Edgar Allen Poe: 1) A man and his daughter are reunited, but the blame for the death of his wife hangs over them, unresolved. 2) A derelict challenges the local wine-tasting champion to a competition, but finds the man's attention to his wife worthy of more dramatic action. 3) A man dying and in great pain agrees to be hypnotized at the moment of death, with unexpected consequences.
A mysterious hypnotist reverts his beautiful assistant back into the form of a prehistoric sea monster that she was in a past life.
A hypnotherapist uses a temperamental teenager as a guinea pig for a serum which transforms him into a vicious werewolf.
A mysterious hypnotist is suspected by the police of being responsible for a wave of young, attractive women committing various forms of self-mutilation.
A music maestro uses hypnotism on a young model he meets in Paris to make her both his muse and wife.
A woman is married to the son of a doctor, the proprietor of a private sanatorium, where she is under unwilling treatment. Both the son and the doctor indicate they want the marriage dissolved. Arriving at the scene is a mysterious personage identified as the doctor's cousin who formerly was a stage magician in Europe. He is accompanied by a threatening dwarf.
American professor John Holden arrives in London for a conference on parapsychology only to discover that the colleague he was supposed to meet was killed in a freak accident the day before. It turns out that the deceased had been investigating a cult lead by Dr. Julian Karswell. Though a skeptic, Holden is suspicious of the devil-worshiping Karswell. Following a trail of mysterious manuscripts, Holden enters a world that makes him question his faith in science.