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 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.
Elsewhere, in addition to Michelle Gomez’s return as Missy, Season 10 will also feature Jekyll & Hyde star Stephanie Hyam in a minor role.
We’ll know more soon, but check out the first Season 10 trailers below, and stay tuned for the April 15 premiere.