Albert is imprisoned on trumped-up charges as part of a Communist revenge plot, and Monique is left to take charge of both Lifeline and the Candide. Alain discovers the existence of a false escape line set up by Reinhardt to flush them out and that one of their evaders, “Mad” Mike Miller, had previously been shot down and helped by Lifeline. Monique must make a difficult decision if she is to maintain Lifeline’s safety.

Still languishing in prison, Albert learns that he was set up by the Communist leader Paul Vercors. Meanwhile, Dr. Keldermans makes a shocking discovery when examining an evader at a safehouse – the man is dying of bubonic plague. Lifeline’s personnel face the horrifying possibility of being wiped out by the deadly disease.