Ok, so before you get too excited about watching the first-ever teaser for the Stephenie Meyer adaptation "The Host", a word of warning: there's not much to see here.

That's because with a release date more than a year out (March 29, 2013) and the film not yet in the can (the cameras started rolling just last month), there's not really any finished footage from the Andrew Niccol-directed movie to draw from.

What we get instead is the very definition of a "teaser" - cryptic voice-over narration, a close-up on star Saoirse Ronan's eye (or, rather, the alien-"infected" eye of her character, Melanie Stryder), and then brief flashes of a host (no pun intended) of other Earth denizens with the same extraterrestrial gleam in their gazes.

As teasers go, this one is pretty effective; it sets up its "Body Snatchers"-type premise well enough that it should appeal to general sci-fi die-hards as well as the book's pre-existing fans. That said, my one big complaint here is that the images of "possessed" humans in the latter half look like a collection of cheap Photoshop jobs.

In any case, those who have already read and loved the novel won't likely care that not much happens in the spot - though it will certainly serve as a painful reminder that, yes, they still have a looooong time to wait yet before the film hits theaters.

For those not familiar with the book, the basic plot centers on a teenage girl (Melanie) who valiantly struggles to maintain her humanity after her body is inhabited by Wanderer, a member of an alien race that is attempting to take control of the Earth's human population.

My grade for the teaser: B-. After watching it below, rate it for yourself at top left!

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A former contributor to sites including MTV's The Backlot and Bloody-Disgusting, Chris Eggertsen worked in film development before indulging his love of pop culture writing full time. He specializes in horror, the intersection of social issues and entertainment and Howard Stern. He's on Twitter @HitFixChris.