Who is the definitive Master? Doctor Who's greatest villain

The Master has been cheating death almost as long as the Doctor has been saving the universe — but can all those different incarnations actually be fitted into a coherent timeline?

Christian Cawley and Brian A. Terranova take a trip through the Master's complicated history, from Roger Delgado and the decaying Master to Anthony Ainley, Eric Roberts, Derek Jacobi, John Simm and Michelle Gomez.

Along the way, they revisit an old theory connecting the Master of the 1996 Doctor Who TV Movie with The Deadly Assassin, examine Big Finish's rather more elaborate attempt to make sense of the Master's regenerations, and consider what Eric Roberts has brought to the role on audio.

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You can watch this week's episode on YouTube: https://www.youtube.com/watch?v=UUCImw-B1Cc
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But continuity is only half the story. Was Doctor Who robbed of a potentially definitive Master by giving Derek Jacobi so little screen time? How does his colder interpretation compare with Delgado's original? And did John Simm effectively get a second chance to play the Master when he returned opposite Peter Capaldi?

It's an attempt to untangle one of Doctor Who's most complicated characters — and work out what actually makes a great Master.

With Christian Cawley and Brian A. Terranova.