It took them five months to get there.Now the two astronauts have finally arrived on Mars. Their mission is to recover samples from a deep-well exploration rig, which has been stranded for twelve years. One of those samples in its lab - a new metal element - could have a huge impact on power generation back on Earth. Perhaps it could even make interstellar travel a possibility.But it soon becomes apparent that someone doesn't want them to take it back. And Mars can be a desolate planet when things go wrong.(Revised Edition)