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Horror film

The Unknown Terror (1957): Cast & Plot

The Unknown Terror (1957) movie poster

The Unknown Terror is a 1957 horror film directed by Charles Marquis Warren, starring Charles Grey as Jim Wheatley / ?The Monster Man, Mala Powers and John Howard. It runs 1 hour 16 minutes.

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The Unknown Terror (1957) movie poster
Released
Runtime
1h 16m (76 min)
Genre
Horror
Original language
English
After the credits
No No extra scene
The story

What Is The Unknown Terror About?

The premise of The Unknown Terror without spoilers. The whole story is in the plot summary further down.

Venturing into the forbidding Cave of Death, a determined woman heads deep into a remote jungle hoping to locate her missing brother. Instead she discovers a deranged scientist who has engineered a terrifying fungus creature that preys on the surrounding villagers, turning the expedition into a desperate struggle for survival.

The Unknown Terror Themes & Keywords

· 11 tags
  • psychotronic film
  • fungus
  • cave
  • explosion
  • dynamite
  • cave in
  • group
  • sister
  • scientist
  • monster
  • jungle
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Cast & crew

The Unknown Terror Cast & Characters

Charles Grey leads the cast as Jim Wheatley / ?The Monster Man, with Mala Powers as Gina Matthews and John Howard as Dan Matthews. Directed by Charles Marquis Warren; 16 actors are credited in all.

Also Starring in The Unknown Terror

· 12 more
From the director

More from Charles Marquis Warren

More films directed by Charles Marquis Warren: Charro!, Cattle Empire, Back from the Dead and Trooper Hook.

Full filmography
Plot

The Unknown Terror Plot Summary

What happens in The Unknown Terror from start to finish, spoilers included, with a timeline of 14 key events. The opening is below; the full summary is a 4-minute read.

Spoilers ahead

The disappearance of Jim Wheatley while exploring the legendary Cave of the Dead pulls his sister Gina Matthews and her husband Dan Matthews toward the phrase they call the shores of the Caribbean. Before they depart, a pre-expedition party brings in uninvited Pete Morgan, who has a complicated past with Gina and Dan, a past that made him a rival in love but also a survivor in danger. Pete’s presence, his limp, and his stubborn determination to join the expedition push Dan to invite him along on the search for answers about the cave and the fate of Jim Wheatley.

Full summary

The whole story of The Unknown Terror, scene by scene

Read the full summary
Videos

The Unknown Terror Trailers & Videos

The trailer of The Unknown Terror.

'The Unknown Terror' (1957) ♦CLASSIC♦ Theatrical Trailer
Quiz

How Well Do You Know The Unknown Terror?

10 questions about the story, each with a hint if you get stuck. Pick an answer to see whether you were right.

Question 1 of 10

  1. Question 1: not answered
  2. Question 2: not answered
  3. Question 3: not answered
  4. Question 4: not answered
  5. Question 5: not answered
  6. Question 6: not answered
  7. Question 7: not answered
  8. Question 8: not answered
  9. Question 9: not answered
  10. Question 10: not answered

Which character disappears while exploring the Cave of the Dead?

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FAQ

The Unknown Terror FAQ: Cast, Runtime & Release Date

Runtime, release date, director, cast and post-credit scenes of The Unknown Terror, each answered in a sentence.

How long is The Unknown Terror?

The Unknown Terror runs 1 hour 16 minutes (76 minutes).

When was The Unknown Terror released?

The Unknown Terror was released on August 12, 1957.

Who directed The Unknown Terror?

The Unknown Terror was directed by Charles Marquis Warren.

More films by Charles Marquis Warren

Who is in the cast of The Unknown Terror?

The Unknown Terror stars Charles Grey as Jim Wheatley / ?The Monster Man, Mala Powers as Gina Matthews and John Howard as Dan Matthews, among 16 credited actors.

Does The Unknown Terror have a post-credit scene?

No. The Unknown Terror has no extra scene during or after the credits.

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