[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/Island_of_Terror.jpg]]

1966 British sci-fi/horror flick starring Creator/PeterCushing, set on a small island which is besieged by "Silicates," bizarre critters with tentacles that kill their victims by sucking their skeletons out. Cushing plays pathologist Brian Stanley, who along with hunky colleague David West and West's girlfriend Toni Merrill, travels to remote Petrie's Island to investigate said monsters, which were accidentally created by reclusive cancer researcher Dr. Phillips. The things reproduce via mitosis and will soon overrun the island, forcing Stanley and West, with help from local doctor Reginald Landers, to race against time to find a means of destroying them.

Not related to ''TerrorIsland''.
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!!Tropes used in this film:
* AnyoneCanDie: [[spoiler:Dr. Landers, a main character for the first half of the film (to the point where he's almost a DecoyProtagonist), dies at about the middle mark. Stanley himself ''almost'' falls prey to this trope, but some quick thinking on West's part ([[AxCrazy and an ax]]) saves 'im.]]
* ApocalypticLog: Dr. Phillips' notes.
* BodyHorror: All those boneless corpses.
* ClosedCircle: Not only are they on an island, but a boat only comes ''once a week'' and the helicopter that flew them there has to leave early on.
* CombatTentacles
* CuriosityKilledTheCast: Several characters just ''have'' to go and see what that weird noise is.
* DangerousWindows
* DarknessEqualsDeath: Subverted. Upon entering the dark and creepy mansion, the first thing our heroes do is turn on all the lights they can find.
* DirtyCoward: Halsey.
* {{Foreshadowing}}: The opening scene has the island scientists arguing if they should wait for the teams in other countries to coordinate their experiments...
** It's mentioned [[LampshadeHanging early and often]] how the island is pretty much cut off from the rest of the world.
* ForScience
* GoneHorriblyWrong: [[spoiler:The scientists were looking for a cure for cancer.]]
* ImmuneToBullets: And dynamite. And {{Molotov cocktail}}s. And axes. And...pretty much anything really.
* HorrorHunger
* LifeOrLimbDecision: See AnyoneCanDie above.
* TheLoad: Toni.
* MadScientist: Subverted. Dr. Phillips is a perfectly well-intentioned, albeit careless, scientist working for the betterment of humanity.
* MyCarHatesMe: Your typical "engine stalls during a monster attack" scenario.
* OurMonstersAreWeird: The Silicates.
* PickyPeopleEater
* ReasonableAuthorityFigure: Island "boss" Roger Campbell.
* ScienceMarchesOn: West's speech at the end of the film basically boils down to this.
* SiliconBasedLife: The Silicates.
* TheEndOrIsIt: [[spoiler:The movie ends with the experiment that created the creatures being replicated in a lab in Japan.]]
* TheXOfY
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