Masterful Part One: A bit of a slow burner to begin with, but once Missy arrives the story really comes to life. Michelle Gomez is excellent and continues to prove herself to be the best Master. She brings this addictive zany energy and a great sense of fun to the character, and her reactions to the other Masters are truly the greatest (I especially love how she refers to the Geoffrey Beevers Master as 'crispy').

John Simm is also great in his audio debut, inviting his past incarnations to a party. Only the Simm Master would gather his other incarnations for karaoke.

Meanwhile, it's nice to also hear Jon Culshaw give a pitch perfect impression of the Ainley Master and the Third Doctor. He's truly one of the greatest all time impressionists.

Masterful Part Two: Stronger than the first part. Missy and Jo Grant are tons of fun together, as are the War Master and John Simm's Master. Mark Gatiss's Master feels like he's in a different story entirely however, and his appearances so far are somewhat jarring.

A great conclusion to the Masterful trilogy. We get much more of the Mark Gatiss Master here, as he attempts to destroy Gallifrey, and the Jacobi and Simm Master combination continues to work especially well. It's Missy who steals the show once again, however, as her wonderfully batty nature sees her take control of the situation. Michelle Gomez brings this darkly manic energy to her performance that's always a joy to watch or listen to, and she will always be my favourite Master.

I also admire the twist with the Entropy Wave; it's not one that I expected, however it makes a considerable amount of sense given the hints throughout Masterful.