The Tardis appears to land in the English countryside, as the Doctor is mad at Ian and Barbara, and wants to return them to their own time.  It turns out they are in the France of Robespierre, and indeed we meet both Robespierre and Napoleon during this adventure, and the drama focuses on intrigue and escape (usually from prison cells, but also from the guillotine).  Not bad, with some diverse acting and characters.

Rating: not bad, 5.5/10