Letter 44 #31

"No one knows when the end will come, only that it will come, and soon. There is no hope for the world, but humanity remains intact. On Mars, the crew of the Clarke are in a last-ditch effort to keep the Builders from taking what they want most - Astra - and leaving the rest of them for dead. Charlotte is determined to keep Astra with her family until the end - whenever it may come."