Mirror, Mirror

Captain Kirk, Lieutenant U'Hura, Dr McCoy and Mr Scott are accidentally transported to a parallel universe.

'Mirror Mirror' is an excellent episode with a fantastic sci-fi concept, suspenseful plot and strong character moments.

The plot involves a great situation that has been done to death throughout the franchise, but this is the original and best episode to use it. There is a ticking clock plot that keeps things suspenseful and a lot of situations showing characters under pressure not to show weakness.

When I first saw it in my youth I was on the edge of my seat, particularly towards the end. It does not quite have the same effect on repeat viewings but there is still much to admire about the sci-fi detail and character interactions.

It is a notable episode for some of the supporting characters like U'Hura and Sulu as they do far more than just man their usual stations. Some of Sulu's dialogue is a bit cartoonish in its villainy but that's all part of the sixties charm. Nichelle Nichols and George Takei do some of their best work here, particularly Takei.

Visually it is fantastic, with great costuming, props and lighting to make the Enterprise and crew look and feel like they belong in a more savage place.

Kirk, Spock and McCoy are well written and William Shatner, Leonard Nimoy and DeForest Kelley are on great form.

It is a 9.5/10 for me but I round upwards.