Species II

Species II is a 1998 American science fiction horror thriller film directed by Peter Medak. The film is a sequel to Species (1995) and the second installment in the Species series. The film stars Natasha Henstridge, Michael Madsen, and Marg Helgenberger, all of whom reprise their roles from the first film. The plot has Patrick Ross, (Justin Lazard) the astronaut son of a senator (James Cromwell), being infected by an extraterrestrial virus during a mission to Mars and causing the deaths of many women upon his return. To stop him, the scientists who created the human-extraterrestrial hybrid Sil in the original Species try using a more docile clone of hers, Eve (Henstridge).

It is followed by Species III (2004).

Plot
Three years after the events of the previous film, Commander Patrick Ross leads a manned mission to Mars. Soil samples collected by Patrick's team of astronauts unwittingly contain an extraterrestrial substance which thaws aboard their capsule due to the temperature difference and contaminates them, causing a seven-minute contact gap with mission control. With seemingly no subsequent negative effects, the astronauts return to Earth to public celebration. Only an institutionalized former scientist, Dr. Cromwell, reacts to their return with violent panic. Meanwhile, Dr. Laura Baker has created a clone of Sil named Eve, whose alien DNA is suppressed to make her more docile. Her team conducts experiments on Eve, hoping to find a way to combat the alien species should it ever return to Earth. Every experiment is unsuccessful as Eve's biology adapts.

Upon their return, Patrick and his team are told to refrain from sexual activity for ten days. Patrick disregards this advice and has a threesome with two sisters following a fundraiser. During sex with the second woman, he begins to sprout tentacles. The woman notices his transformation while she is stroking his body and is horrified at the sight of him, whereupon she tries to free herself from his clutches. Both sisters experience accelerated pregnancies, culminating when Patrick's half-alien children violently explode from their abdomens. Patrick hides both corpses and his rapidly growing sons on the property of his father, Senator Judson Ross. The next day, Patrick tells his father he cannot remember the previous night's events. Senator Ross indicates that he is aware of Patrick's behavior and tells him to focus on his political goals.

Dr. Orinsky, one of the NASA scientists who examined Patrick, discovers something amiss about his blood sample and desperately tries to contact Cromwell. However, Orinsky is ambushed and disemboweled by something formed from Patrick's blood. Laura discovers that the DNA in Orinsky's wounds is distinct from Eve's, prompting Colonel Burgess, the military supervisor in charge of her project, to reunite her with Press Lennox to contain the new threat. Press and Laura seek out Cromwell, Orinsky's former professor, and learn that he discovered that the alien species had attacked and destroyed Mars in ancient times. Because of his fears that alien DNA might remain on Mars to infect anyone who visited the planet in the future, Cromwell urged the government to abort the mission, but was institutionalized to permanently silence him.

Press and Laura identify the Mars astronauts as the prime suspects. Unable to find Patrick, they pursue the other astronauts, Anne Sampas and Dennis Gamble. They arrive too late to prevent Anne from having sex with her husband, resulting in her impregnation with hybrid offspring. A tentacle-like creature bursts from Anne's abdomen and kills her husband before Press and Laura manage to kill her. Meanwhile, a second team of agents locate and examine Dennis, but confirm he is not infected. Laura discovers that Anne's hybrid DNA does not match that in Orinsky's wounds, meaning Patrick is the killer. Meanwhile, Patrick has sex with his fiancée, resulting in her death through the birth of another hybrid son. Horrified at causing her death, Patrick attempts suicide by shotgun, but the alien DNA regenerates his head and restores him back to life—with the drive to mate with as many women as possible. Dennis witnesses this and tells Press and Laura what he saw, remembering what happened in the capsule and joining them in their mission. Patrick begins impregnating as many women as he can, hiding his victims and up to twenty children on his father's property.

Laura is ordered to activate Eve's alien DNA so she can telepathically track Patrick, but this makes her volatile and strengthens her alien instincts. Patrick surrenders to Press and Dennis after attempting to rape a woman, whereupon he becomes aware of Eve; they take him to the lab despite their suspicion. As Patrick is taken to custody, Eve shows signs of being in heat. Patrick demands Laura open Eve's cell and nearly kills her when she refuses, but Press and Dennis drive him off with a special gaseous weapon. Burgess confronts Ross with proof of Patrick's infection and demands help in detaining Patrick. Suspicious that Patrick will instead be killed, Ross deduces that he is at the property and apologizes for treating his son so coldly. Patrick's human side briefly returns, but while he tearfully embraces his father, the alien DNA violently reasserts itself and kills the Senator. Ross's death completely destroys Patrick's humanity, and he helps his hybrid children to cocoon, so they will soon begin mating themselves and prepare to eradicate humanity.

Back at the lab, Laura discovers Dennis was not infected because he is a carrier of sickle-cell disease, as the species lacks immunity to human genetic diseases. While they plan to weaponize this weakness, Eve breaks out of her confinement to find Patrick. Press, Laura and Dennis pursue her, with Burgess and the military following. At the shed, they kill Patrick's offspring while Eve and Patrick transform into their alien forms and begin to mate. The mating stops when Press and Dennis intervene, allowing Eve to break free; Patrick overpowers Eve by chewing on her wrists, apparently killing her. Press impales him in the back with a pitchfork coated in Dennis' blood, causing Patrick to disintegrate and die.

The military escorts Press, Laura and the injured Dennis away. Eve's lifeless body is loaded into an ambulance, but shortly after, her womb begins to swell rapidly—indicating her survival and impregnation by Patrick—while one of his youngest sons, who somehow survived, watches. As the screen cuts to black, Eve's uterus bursts and her screaming is heard.

Cast

 * Natasha Henstridge as Eve
 * Michael Madsen as Press Lennox
 * Marg Helgenberger as Dr. Laura Baker
 * James Cromwell as U.S. Senator Judson Ross
 * Mykelti Williamson as Dennis Gamble
 * Richard Belzer as U.S. President
 * Justin Lazard as Patrick Ross
 * Sarah Wynter as Melissa
 * George Dzundza as Col. Carter Burgess Jr.
 * Myriam Cyr as Anne Sampas
 * Peter Boyle as Dr. Herman Cromwell
 * Nancy La Scala as Debutante sister Marcy
 * Raquel Gardner as Debutante sister Lucy
 * Kim Adams as Darlene
 * Nicholas Vota as Child in Ambulance: Patrick Ross' Child