Oxygen — John B. Olson; Randall Ingermanson

In the year 2012, Valkerie Jansen, a young microbial ecologist, is presented with an amazing opportunity to continue her research as a member of the NASA corps of astronauts. When a sudden resignation opens the door for her to be a part of a mission to Mars, her life dream becomes a reality.

Dreams turn suddenly to nightmares for NASA and the crew as an explosion cripples the spacecraft on the outward voyage. The crew's survival depends on complete trust in one another -- but is one of the four the saboteur?