Zodiac Station - Tom Harper

A lone skier, half-dead with cold, emerges out of the deadly cold of the
Arctic Circle. He's nearly frozen to death, and there's blood on his
clothing, and what looks like a bullet hole though his jacket. But he
hasn't been shot...

His name is Tom Anderson, and he is the
only survivor of a disaster at Zodiac Station, a scientific research
base deep in the Arctic Circle. He tells an incredible story of
scientists and spies, of lust and greed, of jealousy, mayhem and murder.
But his tale simply doesn't add up. Whose blood is smeared across his
clothes? Why is that jacket labelled with someone else's name?

It's clear that more was going on at Zodiac Station than Anderson is
telling. And someone else may have survived the disaster, as well...
someone who has killed before, and who is willing to kill again.