"Never interfere with the course of history!"

An enjoyable historical romp. Certainly elevated by the science fiction elements, a first for the show in a history based story. Certainly a very interesting concept, having another time traveller parallel the Doctor but wanting to meddle with time.

Peter Butterworth as the Monk is a great addition to the plot, a really fun villain. The best moments involve him, with some great dialogue and back and forth between him and Hartnell.

A fun ending to the second season of the show, altering the pure historicals from previous season to strong effect.