Movie where aliens control all life and use it to keep people from finding out

The Earth is invaded by alien parasites—AKA 'slugs'—that ride on people's backs and control their minds.

A lone drifter stumbles upon a harrowing discovery -- a unique pair of sunglasses that reveals that aliens are systematically gaining control of the Earth by masquerading as humans and lulling the public into submission.

An escaped convict, injured during a robbery, falls in love with the woman who nurses him back to health, but their relationship seems doomed from the beginning.

A small-town doctor learns that the population of his community is being replaced by emotionless alien duplicates.

The residents of San Francisco are becoming drone-like shadows of their former selves, and as the phenomenon spreads, two Department of Health workers uncover the horrifying truth.

Aliens attempt to brainwash civilization using various forms of media, unless someone can stop them.

A young astrophysicist searches for sinister extraterrestrials looking for sanctuary for their comrades by possessing the bodies of humans.

The film concerns a sleepy town that is populated mostly by aliens who have suspicious been pretending to be humans for a lengthy period of time in order to eventually strip the planet of resources they need to live.

A man learns about alien agendas from a dying agent and feels compelled to warn the world about the impending danger.

Aliens, contacting scientist Adam Penner, inform him that they have been on the moon for twenty thousand years, undetected due to their invisibility, and have now decided to annihilate humanity unless all the nations of earth surrender immediately. Sequestered in an impregnable laboratory trying to find the aliens' weakness, Penner, his daughter, a no-nonsense army major and a squeamish scientist are attacked from outside by the aliens, who have occupied the bodies of the recently deceased.