We’ve only just begun the farewell Doctor Who season for Peter Capaldi, but something very fishy is going on with Twelve’s regeneration. Not only has Capaldi already shot his demise, but a new trailer shows us more of the impending regeneration, and first look at John Simm making his Master-ful return.

Following this past weekend’s “The Pilot” premiere, The BBC released a spoilery new trailer for the remaining episodes of Season 10. You’ll only catch a brief glimpse of John Simm’s (goateed!) Master toward the end, but it definitely looks like Capaldi wasn’t kidding about a death/regeneration scene.

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 latest.

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