The six-member crew of the International Space Station is on the cutting edge of one of the most important discoveries in human history: the first evidence of extraterrestrial life on Mars. As the crew begins to conduct research, their methods end up having unintended consequences and the life form proves more intelligent than anyone ever expected.

When paleontologist Kate Lloyd travels to an isolated outpost in Antarctica for the expedition of a lifetime, she joins an international team that unearths a remarkable discovery. Their elation quickly turns to fear as they realize that their experiment has freed a mysterious being from its frozen prison. Paranoia spreads like an epidemic as a creature that can mimic anything it touches will pit human against human as it tries to survive and flourish...

One man discovers that aliens are masquerading as humans while they lull the public into submission through subliminal advertising messages. Only specially made sunglasses make the deadly truth visible.

Alien: Terror begins when the crew of a spaceship investigates a transmission from a desolate planet and discovers a life form that is perfectly evolved to annihilate mankind. Species: A beautiful human-alien hybrid escapes from observation to mate with unsuspecting men and produce offspring that could destroy mankind.

Invisible aliens in a tiny flying saucer come to Earth looking for heroin. They land on top of a New York apartment inhabited by a drug dealer and her female, androgynous, bisexual nymphomaniac lover, a fashion model. The aliens soon find the human pheromones created in the brain during orgasm preferable to heroin, and the model's casual sex partners begin to disappear. This increasingly bizarre scenario is observed by a lonely woman in the building...

A vile, malignant life-form crashes to earth in a cozy, rural American town and eats everything that moves.

The mating game gets deadly. In the ongoing fight for supremacy between mankind and the human-alien hybrids, a fatal hybrid weakness has given humans the advantage. Until now. When Eve gives birth to Sara, she develops into the most perfect alien form.

A team of top-level government agents makes a chilling discovery: extraterrestrial beings have landed and are quickly taking control of the residents of a small midwestern town--manipulating their bodies and minds like puppets.

Two hundred years have passed since Ripley made the ultimate sacrifice on Fiorina 161. But over the years, and after seven horrific failures, scientists have finally cloned a perfect replica of Ripley, which includes the alien Queen growing inside her at the time of her death. But this new breed of alien is far more intelligent than its predecessors, a fact the scientists don't realize until after The Betty has arrived with additional human hosts....

The complete story of Lieutenant Ellen Ripley's recurring battles with members of a parasitical extraterrestrial species.