
An American astronaut vanishes from his capsule as it descends to Earth, only to be replaced by a massive, radioactive humanoid creature. The bizarre transformation triggers a frantic response, as a coalition of scientists and military personnel mobilize to track, contain, and capture the monster before it can cause further havoc.
Does Monster a Go-Go! have end credit scenes?
No!
Monster a Go-Go! does not have end credit scenes. You can leave when the credits roll.
See current US streaming, rental, and purchase options for Monster a Go-Go! (1965) via JustWatch.
Explore the complete cast of Monster a Go-Go!, 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.

June Travis
Ruth

Herschell Gordon Lewis

George Perry

Rick Paul

Peter M. Thompson
Dr. Chris Manning

Phil Morton
Col. Steve Connors

Barry Hopkins

Robert Simons

Rork Stevens

Henry Hite
Frank Douglas as a Monster

Lois Brooks
Dr. Nora Kramer (unconfirmed)

Stu Taylor
Kelly, the truck driver

Del Clark

Aviva Crane
Stranded Motorist

Leonard Holstein

Dean Tompis

Jim Bassler

Lorri Perry
Girl at Dance
Discover where to watch Monster a Go-Go! online, including streaming platforms, rental options, and official sources. Compare reviews, ratings, and in-depth movie information across sites like IMDb, TMDb, Wikipedia or Letterboxd.
Read the complete plot summary of Monster a Go-Go!, 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.
Frank Douglas, Henry Hite, an American astronaut, mysteriously disappears from his spacecraft as it parachutes toward Earth. At the landing site, police notice a burned patch on the capsule but dismiss it as a prank, and the situation quickly shifts from a routine post-flight check to a troubling mystery that lingers in the air.
Soon, the vanished astronaut appears to be replaced by or transformed into a large, radioactive humanoid monster. The threat becomes undeniable when the creature steps into view and kills Dr. Logan, turning what could have been a spaceflight anomaly into a full-blown monstrous crisis that demands urgent attention from the ground.
A team of scientists and military men, including Dr. Chris Manning, Peter M. Thompson, and Col. Steve Connors, Phil Morton, works to contain the menace. They manage to imprison the monster in a laboratory, but it escapes, and the chase moves from lab to field with the tension escalating. Neither the capture nor the escape is shown on screen; both events are narrated by the film’s storyteller, Bill Rebane, whose narrator breaks the fourth wall with a calm, reporter-like cadence that keeps viewers guessing about what truly happened.
As the pursuit narrows, the monster is driven toward a sewer beneath Chicago, a claustrophobic finale that underscores the film’s gritty, low-budget atmosphere. Just as the scientists corner it, the creature vanishes, and a telegram arrives declaring that Douglas is alive and well, having been rescued in the North Atlantic. The message hints that the apparent monster may have been an alien impersonating the astronaut, a revelation that broadens the mystery rather than resolves it.
In the closing moments, the narrator delivers the film’s infamous wrap-up, leaving audiences with a lingering sense of ambiguity that has helped this playfully eerie sci‑fi thriller endure in conversations about classic pulp cinema.

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