Despite Beckinsale's impeccable features appearing to be rendered in porcelain, her performance is far from lifeless...she does the best with the material. It's just a shame the same can't be said for the film-makers.
The movie then becomes one of those murder mysteries where everyone is a suspect, and the murderer himself is the least likely candidate of all. Dispelling all logic, you should be able to figure out this whodunit in the opening minutes.
By eliminating so many suspects before the obligatory drawing-room denouement and final deadly confrontation, it's a given that the audience will feel cheated when the real bad guy turns out to be the only possible contender.
What's missing from Whiteout is the pervasive sense of paranoia that you'd expect, or hope for, from a thriller set on the coldest and most isolated land mass on the planet.