The show will indeed be back for season two, huzzah! Speaking to
Decider, the show's executive producer Marian Macgowan revealed that they have six seasons mapped out for the show. She said: "We believe there’s sufficient material to take us through until she is an old woman."
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The Great?
The showrunner, Tony McNamara, added: "I mean we could tell it in four [seasons], we could probably tell it in three. I don’t really know. I think it’s also now I realise the characters are so great across the board – we have 12 great actors playing really great characters and that’s just good TV, so it does seem like there’s a lot to get out of them."