Marked Danger

June 18, 1955

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Science Fiction Theatre - S1 - E11

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A space capsule releases a strange green gas that alters a young woman's metabolism.

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Science Fiction Theatre: Season 1 - 39 Episode s

1x1 - Beyond
April 9, 1955
Travelling at three times the speed of sound, a test pilot ejects claiming that another craft was about to collide with his.
1x2 - Time Is Just a Place
April 16, 1955
A man discovers that his next door neighbors are fugitives from the future.
1x3 - Out of Nowhere
April 23, 1955
When Dr. Osbourne discovers bats crashing into the sides of buildings, he figures out that a radar disrupting device is being used by enemy agents.
1x4 - Y.O.R.D.
April 30, 1955
An alien spaceship in distress is sending an SOS to personnel at an arctic outpost.
1x5 - Stranger in the Desert
May 7, 1955
After meeting a radioactive eagle and a disappearing botanist, two prospectors discover a strange energy source in the desert.
1x6 - No Food for Thought
May 14, 1955
A synthetic nutrient that prolongs the life span of human beings spawns a deadly virus.
1x7 - The Brain of John Emerson
May 21, 1955
A policeman after discovering that his mind contains all the knowledge of a dead scientist decides to continue the scientist's work.
1x8 - Spider Inc
May 28, 1955
A giant spider fossil leads a geologist to discover a method of synthesizing petroleum.
1x9 - Death at 2 A.M.
June 4, 1955
A scientist uses a strength serum to murder a man who is blackmailing him.
1x10 - Conversation With an Ape
June 11, 1955
A telepathic chimp saves a scientist and his wife when they are confronted by a killer.
1x11 - Marked Danger
June 18, 1955
A space capsule releases a strange green gas that alters a young woman's metabolism.
1x12 - Hour of Nightmare
June 25, 1955
Rumors of UFO sitings and human disappearances in a remote section of Mexico draw a man and woman team of magazine photographers to investigate. The police commandante attempts to dissuade them from venturing into the mountains, then, failing that, refers them to a local man to be their guide - the brother of the only person confirmed to have really disappeared. Once among the hills, this trio discovers strange lights in the skies, an abandoned rifle with a grotesquely twisted barrel, something moving in the underbrush...
1x13 - One Hundred Years Young
July 2, 1955
After a chemist claims to be 200 years old there is an effort to perfect an immortality serum.
1x14 - The Strange Dr. Lorenz
July 9, 1955
A doctor discovers that a honey formula has amazing healing powers.
1x15 - The Frozen Sound
July 30, 1955
After a doctor is charge with spying it is learned that a synthetic crystal can record sounds.
1x16 - The Stones Began to Move
August 6, 1955
An Egyptologist tries to prove that the pyramids were constructed using levitation.
1x17 - The Lost Heartbeat
August 13, 1955
A scientist needs to construct a mechanical heart or his colleague will die.
1x18 - The World Below
August 27, 1955
The survivors of a submarine disaster claim that they saw a city on the sea floor. They, however, are ridiculed by investigators.
1x19 - Barrier of Silence
September 3, 1955
A U.S. scientist working on a top-secret atomic project disappears from a German city. When he reappears two weeks later, he cannot remember anything about what happened to him. He cannot communicate with those around him and appears to be brainwashed.
1x20 - The Negative Man
September 10, 1955
When electrician Vic Murphy is blasted by the electricity of a computer, his intelligence immediately soars beyond genius level and his senses enable him to hear and see things no man has ever before experienced.
1x21 - Dead Reckoning
September 17, 1955
On an emergency flight to the Arctic, a pilot runs into a magnetic storm. The crew is forced to use Earth's magnetic fields to escape.
1x22 - A Visit from Dr. Pliny
September 24, 1955
A man claiming to be from another planet announces that he has a source of power greater than atomic energy. He claims he has come to share the knowledge, but is regarded as an eccentric crack pot.
1x23 - Strange People at Pecos
October 1, 1955
Radar expert Jeff Jamison believes that his neighbors are spies from outer space. He becomes more convinced when the neighbor's little girl appears to be unable to feel pain.
1x24 - Dead Storage
October 8, 1955
A baby woolly mammoth is brought to life after being frozen in the Arctic for a half million years. Scientists attempt to discover a means of sustaining its life.
1x25 - The Human Equation
October 15, 1955
A doctor discovers that brutal murders are being caused by fumes from a wheat fungus experiment that produces violent side effects.
1x26 - Target: Hurricane
October 22, 1955
When a meteor's plunge into the ocean causes a hurricane that sweeps toward Florida, a meteorologist desperately searches for his son.
1x27 - Water Maker
October 29, 1955
A scientist is comes to the desert laboratory of a dead scientist in order to evaluate the scientist's plans to create water in the arid areas of the earth.
1x28 - The Unexplored
November 5, 1955
A woman's telepathic abilities lead her and her husband to a missing biologist.
1x29 - The Hastings Secret
November 12, 1955
A scientist is killed by deadly termites in the jungles of Peru. A young couple attempt to complete his experiments on termites that can eat through solid rock.
1x30 - Postcard from Barcelona
November 19, 1955
A dead scientist's papers reveal that he had made a deal with aliens to help mankind's progress in science.
1x31 - Friend of a Raven
November 26, 1955
A social worker tries to help a deaf-mute boy who can apparantly communicate with animals. When the boy's hearing and speech are restored, he rebels.
1x32 - Beyond Return
December 3, 1955
A serum cures a dying woman but turns her into a killer who can change her physical appearance at will.
1x33 - Before the Beginning
December 10, 1955
Biophysicist Dr. Ken Donaldson uses a photon gun to cure his wife of a mysterious disease.
1x34 - The Long Day
December 17, 1955
An experimental rocket creates artificial daylight at night and causes trouble for an ex-con.
1x35 - Project 44
December 24, 1955
After a crew is chosen for the first flight to Mars trouble arises when the project is continually sabotaged by an astronaut.
1x36 - Are We Invaded?
December 31, 1955
A student tries to prove that flying saucers exist. His evidence is debunked until he turns up a photograph that could only have been taken from a distant point in the universe.
1x37 - Sound of Murder
January 7, 1956
Dr. Tom Matthews uses his scientific knowledge to battle a false charge of murder. The problem is the case against Matthews is strong because Matthews's voice has been identified in compromising situations.
1x38 - Operation Flypaper
January 14, 1956
A thief uses a sonic paralyzer to freeze people while he steals scientific secrets.
1x39 - The Other Side of the Moon
January 28, 1956
A scientist believes that the moon is being used as a nuclear waste dumping ground by creatures from other worlds.

1x1 - Beyond

1x2 - Time Is Just a Place

1x3 - Out of Nowhere

1x4 - Y.O.R.D.

1x5 - Stranger in the Desert

1x6 - No Food for Thought

1x7 - The Brain of John Emerson

1x8 - Spider Inc

1x9 - Death at 2 A.M.

1x10 - Conversation With an Ape

1x11 - Marked Danger

1x12 - Hour of Nightmare

1x13 - One Hundred Years Young

1x14 - The Strange Dr. Lorenz

1x15 - The Frozen Sound

1x16 - The Stones Began to Move

1x17 - The Lost Heartbeat

1x18 - The World Below

1x19 - Barrier of Silence

1x20 - The Negative Man

1x21 - Dead Reckoning

1x22 - A Visit from Dr. Pliny

1x23 - Strange People at Pecos

1x24 - Dead Storage

1x25 - The Human Equation

1x26 - Target: Hurricane

1x27 - Water Maker

1x28 - The Unexplored

1x29 - The Hastings Secret

1x30 - Postcard from Barcelona

1x31 - Friend of a Raven

1x32 - Beyond Return

1x33 - Before the Beginning

1x34 - The Long Day

1x35 - Project 44

1x36 - Are We Invaded?

1x37 - Sound of Murder

1x38 - Operation Flypaper

1x39 - The Other Side of the Moon

S1: Season 1

S2: Season 2