یک مجسمه ساز ناموفق یک دیوانه به نام "خزنده" را از غرق شدن نجات می دهد. او با دیدن فرصتی برای انتقام جویی، این فرد دیوانه را در کشتن منتقدین خود فریب می دهد ...

Dr. Lynn Harper, psychologist, has been called out to the old Ingston Mansion, a dark and mysterious place with a very bad reputation, in order to make an assessment of the sanity of Margaret Ingston, daughter of patriarch Kurt Ingston. She claims to be sane, but she is clearly very disturbed; we can't be certain, although the doctor gives her a clean bill of health. But then Dick Baldwin shows up on the scene, just when Dr. Lynne has been receiving thinly veiled threats from the inhabitants of the house. He's our hero. Three medical doctors have been invited out to the mansion as well, Dr. Timmons, Dr. Phipps and the sleazy Dr. King (Lionel Atwill). One by one the doctors are mysteriously murdered. Dick Baldwin must figure out who is doing the killings, and he must do so before whoever it is can kill his new love interest, Dr. Lynne Harper. But the only one he can trust is Kurt Ingston himself, since Ingston has no legs and can't have perpetrated these murders. Is it sinister Rolf, the butler, or Laurie, the sex crazed and sociopathic chauffeur, or Agor Singh, the Hindu Yogi with his strange ways? And of course, Lynne might be wrong, Margaret may be very insane, and she might be the culprit. Written by Jim Knoppow

A mad scientist turns a man into an electrically-controlled monster to do his bidding.

A monomaniacal zoologist is pathologically jealous of his beautiful but unfaithful wife Evelyn and will not stop short of murder to keep her.

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. Written by Doug Sederberg

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. Written by

Greedy heirs gather to wait for the death of Henrietta Winslow. Murder, thunder claps, howling cats, gun shots, screams in the night, hidden passages -- all the proper ingredients. Written by Ed Stephan

The inventor of a new top-of-the-line burglar alarm system is kidnapped by a gang in order to get him to help them commit robberies.

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.

When his friend Professor Kingsley is at deaths door, brain surgeon Dr. Sovac saves his life by means of an illegal operation that transplants part of injured gangster Red Cannons brain. Unfortunately, the operation has a disastrous Jeckll and Hyde side effect and under certain conditions the persona of Cannon emerges. Sovac soon learns of the duel personality and of half a million dollars the gangster has hidden away. He attempts to find the money through the manipulation of his friend, an attempt that brings Kingsley closer to madness as he alternates between a meek professor of English and a brutal gangster out for murderous revenge on those who tried to kill him. Written by Carlos Valverde

In the 15th century Richard Duke of Gloucester, aided by his club-footed executioner Mord, eliminates those ahead of him in succession to the throne, then occupied by his brother King Edward IV of England. As each murder is accomplished he takes particular delight in removing small figurines, each resembling one of the successors, from a throne-room dollhouse, until he alone remains. After the death of Edward he becomes Richard III, King of England, and need only defeat the exiled Henry Tudor to retain power. Written by Doug Sederberg

Man investigates the disappearance of two of his friends who were the guests of a sinister Austrian count.