One Way

Frank Kitteridge is serving life for murdering his son's drug dealer. So when he's offered a deal by Xenosystems Operations - the company that runs the prison - he takes it, even though it means swapping one life sentence for another.
He's been selected to help build the first permanent base on Mars. Unfortunately, his crewmates are just as guilty of their crimes as he is - and he'll have to learn to trust them if they're to succeed.
As the convicts set to work on the frozen wastes of Mars, the accidents multiply. Until Frank begins to suspect they might not be accidents at all ...
There's a murderer amongst them, and everyone's a suspect.