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

Previous Story: Terminus

This story has such a creative and distinct feel to it. All the ideas feel fresh and really just make sense for Doctor Who. It really helps that the production looks so good. The sets, the lighting, the costumes and the effects are all fantastic. The scene where Turlough jumps off the ship is so vivid with the gloomy lighting and haunting image of him drifting further and further into space.

The actual plot is really interesting too, and I'd love to see more of the Eternals. The race to reach enlightenment adds high stakes to this story. Turlough gets a lot of character development here, he gets a lot of character-defining moments and I'm glad that the Black Guardian business is mostly wrapped up. Turlough is easily one of the most inventive companions that Doctor Who has done. Mark Strickson's performance is phenomenal, he's charming yet duplicitous and has elements of cunning aswell.

Overall, I think this is a really solid, tightly-written story. It feels quintessentially Doctor Who and is one of the best looking stories I've seen in ages. The cliffhangers here are also marvellous and the ending is one of my favourite endings to a TV episode in a long while.

Next Story: Freakshow