剧情简介：

The Doctor, Ian, Barbara and Susan arrive in what they believe to be England. However, it is soon clear that they have travelled back into Earth history yet again, this time to 18th Century France. They have arrived in a wood twelve kilometres from Paris, then venture to a nearby farmhouse, which seems to have seen better days. When they venture inside they find the farmhouse is being used as a staging post in an escape chain for counter-revolutionaries and contains clothes – some of which are put to good use by the travellers - and fake papers, some of which bear the signature of Robespierre, the chief orchestrator of government during the Reign of Terror. Before long they are found by two counter-revolutionaries, D＇Argenson and Rouvray, who knock the Doctor unconscious and hold the others at gunpoint. The impasse is ended when a band of revolutionary soldiers surrounds the house and demands their collective surrender. Both D＇Argenson and Rouvray are killed during the siege, but only after they have worked out that there must be a traitor in their escape chain. The soldiers now enter the house and capture Ian, Barbara, and Susan, who will be marched to Paris and the guillotine. The parting action of the soldiers is to set fire to the farmhouse – unaware there remains one person inside.