This is part of a series of reviews of Doctor Who in chronological timeline order.

Previous Story: The World Traders

A thought-provoking story that tackles the moral dilemma of a fixed point in time in which a lot of people die. While this idea has been done many times before the concept of other time-travellers interfering is a unique spin.

It's a story that has a lot of moral grey area and leaves you with something to think about.

Well acted and it has Jon Culshaw in it.

Next Story: The Tribulations of Thadeus Nook