Sian Brooke, known for her turn as Sherlock Holmes sister on BBCs Sherlock, has landed a key role in the next installment in the Mission: Impossible franchise starring Tom Cruise.
Vanessa Kirby (The Crown) and Henry Cavill have also joined the cast. Rebecca Ferguson, Simon Pegg, and Jeremy Renner are also expected to return, though its unknown in what capacity.
Christopher McQuarrie, who directed Mission: Impossible Rogue Nation, is back to direct this sixth film from a script he wrote.
It is unknown what Brookes role is, and plot details are also being kept under wraps at this time. Production is expected to start in the spring.