Author Tim Prasil's "Marvellous Boxes" has taken us to new worlds of the imagination, but this week we see that we might not be as ready as we think to visit them in real life. Months into an isolation test designed to test gear for an eventual mission to Mars, a crew faces equipment failures, shortages and a mysteriously shrinking population. Would they be equal to the task if they were suddenly... Facing Cydonia?