Inner Sanctum Mysteries

Losing his memories of the last few days, neurologist Dr. Steele is told that his wife has been brutally murdered. Steele, aware of his conniving wife's infidelity, believes he may have been the killer and enlists the aid of his pretty nurse Stella to hypnotize him into recovering his lost memories.

Stage mentalist Gregor the Great becomes enraged when a drunken audience member belittles his act. When the man dies suddenly, Gregor convinces himself that his hypnotic powers are to blame. Guilt-ridden, he retires from performing to Valerie Monet's wax museum. He becomes increasingly stressed when he is pursued romantically by Valerie, her niece, and his former stage assistant, Maura Daniel. When Valerie mysteriously disappears, it is apparent that sinister forces are at work in the museum.

An artist (Lon Chaney Jr) is blinded by a jealous assistant/model. His fiance's father generously offers his eyes for a sight restoring operation. there's only one hitch. Chaney has to wait until after the man dies. Not surprisingly, when the benefactor dies a very premature death, suspicion falls on the artist.

While on a South Seas trip, a professor falls in love and marries an exotic native woman. What he doesn't know is that she was raised by superstitious natives who believe her to be some kind of supernatural being.

Attorney Wayne Fletcher and his secretary are having an affair, so when Wayne's wife is found smothered to death, he becomes the prime suspect. As the police investigate the murder, a psychic with questionable motives tries to contact the deceased woman. Soon, Wayne begins seeing visions of his dead wife, and other people involved with the case begin to be killed, one by one.

A distraught Jeff Carter arrives at a renowned lawyer's home with a mysterious bag and a confession he desperately wants heard. Jeff was an underpaid chemist working for unprincipled pharmaceutical tycoon Roger Graham, who takes the profit, as well as the credit, for Jeff's discoveries and hard work. When Graham prioritizes profits over safety, Jeff resigns and is blacklisted by his boss. A chastened Graham is later forced to relent and rehires Jeff under the latter's terms. He presses him to release an unproven influenza drug, but Jeff refuses and asks to go to South America to perfect the formula. The unscrupulous Graham uses the opportunity to release the drug as well as romance Jeff's attractive wife. When Jeff returns and finds that his son has died from the effects of the untested drug, he decides to take revenge.