What a cleverly written finale for this little boxset, so enthralling and keeping me guessing throughout! This episode really highlights how well actors can shine when writers put their faith in them and give them a constrained episode to show their stripes.

I really like the way that the Doctor starts off fairly quiet, but as the story continues, he becomes more and more aggressive and hostile as he confronts the three other cast members. It's a nice little nod to his tenure as a whole, where he is, most of the time, kind and innocent, but by the end he's determined, commanding and powerful. Nyssa spends most of the time in the background, which is a little disappointing. but it's nice for this Doctor, who is usually around his friends, all on his own.

The Rasht is a brilliant villain - so clever, creating doubt and concern in the audience as we don't know who it is - like I said, it's constantly shrouded in mystery, but in retrospective it's so obvious who the imposter was, and it's that subtle buildup that makes this story so brilliant and engaging. I felt like the ending was a little rushed, but I don't mind for the drama that ensues between the characters in the rest of the story.

I love the meta jokes this story goes to make about a behind-the-scenes, directors commentary that it's set during, referencing the commentaries that are done in the Classic Who DVDs, and more recently the Collection Boxsets - the format of this story is excellent, confined to a small, claustrophobic space and allowing the actors to focus on performing vocally, rather than having to voice any physical actions.

The dialogue for this story is phenomenal, constantly witty and interesting. The cast members are all different and contribute their own element to the episode, with the grumpy lead star often criticising the dull comments of his co-workers, the enthusiastic director bouncing off the others and Johanna constantly interrupting everyone with her excitability - they're all excellent, innovative and hilarious side characters that this story whizzes by as you're enjoying every second, and the imposter reveal is surprising!

The score is brilliant as well, going over the top with an impressive orchestral score setting a scary and imposing soundtrack to accompany the actors' horror-stricken performances, really raising the stakes and constantly memorable.

Favourite Line: "It's not me! I've got a BAFTA!"

A phenomenal conclusion to this set of stories - one average episode, three brilliant ones and they're really worth the listen, really great if you're still in the Halloween mood. Brilliant pacing, the character work is superb, awesome actors and a lot of enjoyment.