"They were sent to build a utopia, but all they found on Mars was death. XO, the greedy- and ultimately murderous- corporate architects of humanity's first Mars base, made a costly mistake: they left Frank Kittridge alive. And now XO will do anything to keep their secrets safe. If there's one thing in Frank's favor, it's this: he's always been prepared to go to extremes to get the job done/ That's how he ended up on Mars in the first place. It just might be his ticket back. (Source of summary not specified).

From cover: Now there is life on Mars.