My rating: 4 of 5 stars
A terrific thrill to read, even better than the first, Oxygen. The tension remained high through most of the story, with few points for a breather. Best of all, I really didn’t know who the culprit was until the reveal, a true surprise. This story has the added bonus of being set on Mars, an ongoing fascination of mine.
And the appendices hold a bonus for new writers, with excellent advice I’ve already applied to my writing.