After evading an attack by Cassini Pirates, the Liberator heads to the rogue moon of Quentil, where Avon and Vila infiltrate a top secret Federation science facility.
Dr Lian has a mysterious new patient - a man who was found shot in the leg near Engel City, a man who is delirious and talking about the most extraordinary acts of rebellion.
Some time ago, Blake and his crew were helped by a revered Auron scientist named Gustav Nyrron. He stayed aboard the Liberator for a time and then disappeared.