
Mysterious beings from beyond the stars arrive with a sinister purpose: to impregnate human women. They begin covertly replacing townsfolk, the first victim a young man on the brink of marriage. His new wife grows uneasy as his strange habits surface, and soon similar odd behavior spreads among other residents, confirming her fears.
Does I Married a Monster from Outer Space have end credit scenes?
No!
I Married a Monster from Outer Space does not have end credit scenes. You can leave when the credits roll.
See current US streaming, rental, and purchase options for I Married a Monster from Outer Space (1958) via JustWatch.
Explore the complete cast of I Married a Monster from Outer Space, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Maxie Rosenbloom
Max Grady - Bartender

James Anderson
Weldon

Valerie Allen
Francine - Hooker

Ty Hardin
Mac Brody (as Ty Hungerford)

Mary Treen
Mother Bradley (uncredited)

Gloria Talbott
Marge Bradley Farrell

Alan Dexter
Sam Benson

Ralph Manza
Ralph the Waiter (uncredited)

Tom Tryon
Bill Farrell

Bess Flowers
Wedding Guest (uncredited)

Harold Miller
Wedding Guest (uncredited)

Joe Gray
Alien (uncredited)

John Eldredge
Police Capt. H.B. Collins

Charles Gemora
Alien (uncredited)

Ken Lynch
Dr. Wayne

Arthur Lovejoy
Minister (uncredited)

Jean Carson
Helen Rhodes

Robert Ivers
Harry Phillips

Helen Jay
Second Girl (uncredited)

Darlene Fields
Caroline Hanks (uncredited)

Steve London
Charles Mason

Jack Orrison
Officer Schultz

Chuck Wassil
Ted Hanks

Tony Di Milo
Mr. Potter - Western Union Clerk (uncredited)

Sherry Staiger
First Girl (uncredited)
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Challenge your knowledge of I Married a Monster from Outer Space with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
Who is the main female protagonist who suspects something is wrong with her husband?
Read the complete plot summary of I Married a Monster from Outer Space, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
After a year of marriage, Marge Farrell grows despondent as her husband Bill Farrell becomes cold and distant, even toward their new dog, a surprise anniversary present. The dog barks and snarls at him, and one night he kills it in the basement, telling Marge the dog was strangled by its collar while pulling on its tethered leash. She also worries about not conceiving, despite various tests that suggest she can have children, and a doctor who suggests that Bill come in to be tested as well. Her doctor, Dr. Wayne, confirms she can have children and recommends that Bill undergo tests too.
She soon notices that other husbands in their social circle are behaving the same way. One night, she follows Bill to a secluded area in the woods, where she discovers that the man she married is not himself at all but an alien impostor. An extraterrestrial life form leaves Bill’s body shell and enters a hidden spaceship, revealing a broader, chilling invasion plan.
Marge tries to warn others, but too many men in town have already been taken over. She attempts to call Washington, D.C., but all outgoing lines are busy, and when she tries to leave by car, the exit bridge is reportedly down. Confronting Bill, she reveals that she knows he is an alien. Bill explains their ultimate plan: on his dead planet, females are extinct, so the males of his species are taking over Earth to breed with the women, with scientists aiming to modify bodies so the union can continue. Yet they did not anticipate that inhabiting human shells would awaken in them feelings like love, a sensation foreign to their race. One of the men even dies from a drowning accident only to be revived with oxygen, a sequence that underscores the perils of their partnership with human biology.
Finally, the doctor gathers a posse of men who cannot be disguised aliens because they have fathered children. They assault the aliens in their hidden spaceship, and bullets fail to pierce the invaders’ defenses—protected by a force field. The aliens prove vulnerable to two German Shepherd dogs used by the posse, and the attackers kill them one by one. Entering the ship, the posse finds all the human captives unconscious but alive, hooked up to apparatuses that allow the aliens to inhabit human shells. As the captives are disconnected, the aliens die one after another. Just before the Chief of Police’s alien occupant destroys his faux body, a warning is broadcast to the aliens in orbit that they have been discovered. A fleet of alien ships retreats from Earth space, leaving the humans to escape the doomed ship as it explodes. The operation frees the captives and reuniting Marge with Bill, who is still in his human form, at last marks a fragile, bittersweet victory for the people of their town. In the end, the story lingers on the resilience of a wife who refused to accept an invisible invasion, and the bond that endures even when a marriage is stretched to the limit.
Marge and Bill’s renewed reunion closes the tale with a quiet, hopeful note, even as the wider threat recedes into the shadows of space.

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