Born Natasha Tonya Henstridge on August 15, 1974, in Springdale, Newfoundland and Labrador, Canada, Henstridge spent much of her childhood in Alberta. Long before Hollywood came calling, she was headed toward an international modeling career. Still in her teens, she entered the fashion world and moved to Paris, where she quickly found work. Her modeling career included magazine covers, fashion assignments and advertising campaigns, giving her considerable experience in front of a camera before she ever delivered a line of movie dialogue.

Henstridge's early success was remarkable considering how young she was. IMDb records that she left home as a teenager to pursue modeling in Paris and landed a cover of French Cosmopolitan. She subsequently appeared on numerous international magazine covers and in advertising for major brands. Modeling could easily have remained her career, but Henstridge wanted to act, and Hollywood soon presented her with an opportunity considerably more memorable than posing for another photograph.

That opportunity was Species in 1995.

Henstridge was only 19 when she landed the starring role of Sil, a genetically engineered human-alien hybrid created after scientists receive extraterrestrial genetic information. Naturally, because this is a science-fiction horror movie, the scientists decide that combining mysterious alien DNA with human DNA sounds perfectly reasonable. Things go badly. Sil escapes, matures with alarming speed and begins searching for a mate while a team of specialists attempts to find her before humanity acquires a rather troublesome new branch on the family tree.

Henstridge found herself working opposite an unusually accomplished cast for her first film, including Ben Kingsley, Michael Madsen, Alfred Molina, Forest Whitaker and Marg Helgenberger. Michelle Williams portrayed the younger Sil. For an actress making her feature-film debut, Henstridge was not exactly surrounded by beginners.

The role made Henstridge instantly recognizable. Sil was simultaneously seductive, frightening, vulnerable and utterly alien, requiring Henstridge to portray a creature driven largely by instinct while still giving audiences glimpses of something recognizably human. The movie's combination of science fiction, horror and sexuality made Species one of the more memorable genre films of the 1990s, and Henstridge became permanently associated with the character. IMDb notes that her performance brought her an MTV Movie Award.

Hollywood wasted little time putting its new star to work.

In 1996 Henstridge appeared opposite Jean-Claude Van Damme in the action thriller Maximum Risk. She played Alex Minetti in a story involving murder, organized crime, Russian mobsters and identical twins. In other words, considerably less complicated than alien genetics.

She returned to familiar territory with Species II in 1998, this time playing Eve, another human-alien hybrid connected to the genetic nightmare introduced in the original film. The sequel demonstrated how firmly Henstridge had become identified with the franchise, although she was already working to establish herself beyond science-fiction horror.

One of her most successful opportunities to do exactly that arrived with the 2000 crime comedy The Whole Nine Yards. Henstridge played Cynthia Tudeski alongside Bruce Willis, Matthew Perry, Amanda Peet, Michael Clarke Duncan and Rosanna Arquette. The film allowed Henstridge to display her comic abilities while navigating a plot involving contract killers, unhappy marriages, organized crime and neighbors who really should have spent less time asking questions.

The movie became one of Henstridge's best-known films outside the Species franchise, and she later returned as Cynthia for the 2004 sequel The Whole Ten Yards.

Henstridge remained busy in 2000 with appearances in Bounce, starring Ben Affleck and Gwyneth Paltrow, and the television production Jason and the Argonauts. Her willingness to move among genres became an important feature of her career. Science fiction might have introduced her to audiences, but comedy, drama, action and television provided opportunities to demonstrate that Sil was only one character in a much broader résumé.

Science fiction nevertheless continued to have Henstridge's telephone number.

In 2001 she starred as Lieutenant Melanie Ballard in John Carpenter's Ghosts of Mars. The film placed Henstridge on Mars opposite Ice Cube, Jason Statham and Pam Grier. The story involved a mining colony, ancient Martian forces and enough firearms to suggest that peaceful interplanetary diplomacy had already been removed from the agenda. Although the movie was not a major critical success, it became another prominent science-fiction credit in Henstridge's career.

Television increasingly became an important part of her work. Henstridge starred in the action-comedy series She Spies, appeared in Commander in Chief with Geena Davis, and took recurring and leading roles in numerous other television productions. Her credits have included Eli Stone, Drop Dead Diva and The Secret Circle, along with a substantial collection of television movies and guest appearances.

She also ventured into animation, providing the voice of Miss Ellen in an episode of South Park. For someone who had already survived alien hybrids, assassins and Martian ghosts, entering the world of South Park may have been the genuinely dangerous career decision.

Henstridge received significant recognition for her dramatic television work in the Canadian miniseries Would Be Kings. Her performance earned her a Gemini Award for Best Actress, demonstrating again that her abilities extended well beyond the science-fiction roles with which audiences most readily associated her.

Her later career continued to mix television and film. She appeared in productions including The Bronx Bull, in which she played Sally, wife of boxer Jake LaMotta, and continued taking roles in thrillers, dramas, independent films and television projects. IMDb lists dozens of acting credits across a career stretching from the mid-1990s into the 2020s.

That longevity is particularly notable because Henstridge entered acting under circumstances that could easily have produced a very short career. She was a successful model handed a major role in a provocative science-fiction movie, a combination that practically invited Hollywood to typecast her permanently. Instead, she built a career encompassing comedy, action, drama, horror, television and independent filmmaking.

Her association with Species, however, remains unavoidable—and there are considerably worse problems for an actor to have. Sil became an enduring science-fiction character, and the film introduced Henstridge to audiences around the world. Decades later, photographs and discussions of the movie remain closely connected to her career.

Away from acting, Henstridge is the mother of two sons. She was married briefly to actor Damian Chapa in the 1990s and later married Scottish singer and actor Darius Campbell in 2011. Their marriage ended in divorce in 2018.

From a teenage Canadian model working in Paris to an internationally recognized actress, Natasha Henstridge followed an unusual route into Hollywood. Her first major film could easily have defined the entirety of her career, yet she continued working across film and television for decades afterward. She proved equally willing to tackle comedy, action and drama while periodically returning to the science-fiction territory that first made her famous.

Still, for an entire generation of moviegoers, Henstridge will always be Sil.

And somewhere, a fictional government scientist is probably still proposing another experiment involving extraterrestrial DNA.

Someone really ought to hide the laboratory keys.