The Master already made a grand return to Doctor Who in recent years, but with the imminent departure of Peter Capaldi and Steven Moffat, Season 10 is dipping back into history a bit. Another fan-favorite Master will appear for the first time in seven years, facing off with Missy herself.

Beware a few Doctor Who Season 10 spoilers from here on out, but The BBC officially confirms that actor John Simm will return in his role as The Master, having last appeared as the character in 2010. The villainous figure got a fresh start against Peter Capaldi as Michelle Gomez’s gender-inverted Missy, while Simm says:

I can confirm that it’s true, thanks to the power of time travel I’m back. It’s always a pleasure to work with this great team of people and I can’t wait for you all to see what the Master gets up to in the next series.

Added Moffat, clearly a bit irked that the secret leaked:

Nothing stays secret for long on Doctor Who but you’ll have to wait a little bit longer to see exactly what the Master is up to and how he makes his return to face the Doctor. It’s been a huge pleasure to have fan favourites John Simm and Michelle Gomez face to face in the same role! It’s not often you get to see a solo personality clash.

Elsewhere, in addition to Michelle Gomez’s return as Missy, Season 10 will also feature Jekyll & Hyde star Stephanie Hyam in a minor role. Peter Capaldi has suggested Jenna Coleman’s Clara might return in some form, while the search for a new Doctor will begin later this year. Steven Moffat’s last season was also confirmed for 2017, placing Chris Chibnall as the new head writer and executive producer, to begin after Season 10.

We’ll know more soon, but check out the first Season 10 trailers below, and stay tuned for the April 15 premiere.

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