The Doctor and his companions (Ian, Barbara, and Susan) versus the dangers of revolutionary France, which involves imprisonment, betrayal, and the constant threat of the guillotine.

During meal delivery in the prison corridor, the Jailer—distracted by LeMaitre’s abrupt summons—leaves the cell key lodged in the lock while rushing to obey. His negligence, born of fear and …

In the tense aftermath of Barbara and Susan’s rescue, Jules interrogates them about their capture near a revolutionary escape route, revealing the execution of two key allies—D’Argenson and Rouvray—who were …