There were seven of them headed for Tantalus on the star-ship Santa Maria - four men and three women. All with a tainted history. Now they were pulling together in the face of the unknown alien enemy that lay in wait for them on Tantalus.But there was something more deadly to be feared than the creatures of Tantalus. And a lot closer.One of the team was a saboteur. Planted to destroy the mission from within.