Gateway: Left Behind by Richard Alan Dickson
Approx. 93,620 words.
Published on July 21, 2011 by
Grey Cat Press.
When a Gateway station explodes, Rupert Cole races to find the cause. With terror factions already ruling the Earth, only Gateway keeps them from those who've fled to the safety of space. If the factions have finally discovered a way to escape, there will be no putting them back... and nowhere left for everyone else to run.