Species (Dir. Roger Donaldson, 1995): When a creature, geneticaly engineered through extraterrestrial intelligence, escapes from observation, scientist Xavier Fitch (Kingsley) assembles an elite team of experts to track it down. The crew - a government assassin (Madsen), an empath (Whitaker), a biologist (Helgenberger) and an anthropologist (Molina) - combines their expertise and traces their prey to Los Angeles. There, in the form of a stunning young woman (Henstridge), the alien initiates a horrific plan to mate with unsuspecting men and produce offspring that could destroy mankind. As her deadly biological clock rapidly ticks, Fitch and his team are hurled into a pulse-pounding chase in which the fate of humanity itself lies in the balance...

Species 2 (Dir. Peter Medak, 1998): During a mission to Mars, astronaut Patrick Ross (Justin Lazard) is infected by alien DNA. Back on Earth he starts to transform into a terrifying alien entity with a one track mind - to mate with human women and colonise the world with his half-alien offspring.

Scientist Laura Baker (Marg Helgenberger) and ex-military assassin Press Lennox (Michael Madsen) race against time to stop Patrick. They use Eve (Natasha Henstridge), the beautiful half-alien clone, to lure Patrick, but Eve's instinct to mate is too strong and she escapes looking to procreate with Patrick to create and alien race that spells doom for mankind...

Species 3 (Dir. Brad Turner, 2004): The third in the series of the nudey-horror franchise sees Eve (Henstridge) let her daughter, Sara (Sunny Mabrey) run riot on the male population in her place!

The battle between mankind and the human-alien lifeforms has gathered pace since the last frenetic round of action, with the humans gaining a slight upper hand. But the emergence of Sara soon gives the aliens a vital boost to their efforts, with the deviously seductive hybrid heading to earth in order to repopulate it by reproducing as much as possible! Her incredible sex drive allows her to carry out the taxing mission, but a huge human military presence is gathering, aiming to put Sara and her cohorts out of action for good.