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

Previous Story: Mindwarp

If it weren't for The Ultimate Foe, this would easily be my favourite Sixth Doctor story. This is where the trial scenes really start to have an impact, with the Doctor finally presenting his case for the defence. This is probably one of the cleverest uses of time-travel in the classic show so far and a great depiction of how I imagine Time Lord trials would work. Michael Jayston is fantastic as the Valeyard and quickly becomes one of the most intimidating villains in Doctor Who.

Bonnie Langford gets unceremoniously dropped into the show as a companion, it's a really jarring change from Peri's sudden death to Mel and the Doctor exercising. The plot itself is one of Baker's most solid so far, better than Vengeance on Varos in my opinion. There's some really great mystery here and it all gets satisfyingly explained. These stories have been excelling at shocking cliffhangers and this is no exception, especially at the end. Overall, it's already a great story on it's own but the thrilling trial scenes elevate it to a much higher level.

Next Story: The Ultimate Foe