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Title: Great story, but one flaw
Review: The ending of this story was rewritten to make a seamless transition into the next story, Planet of the Daleks. Because of this, we never find out what becomes of the Master. He just vanishes without explanation. Sadly, real-life events made it impossible to write the Master into the next story, as Roger Delgado was tragically killed in a car crash in Turkey shortly after the filming of Frontier was completed.Roger Delgado is awesome here. It's worth owning this one just to see his mocking tirade of the Daleks in episode six, referring to them as "stupid tin boxes", easily outsmarted.
