The BBC has published the official synopsis for the final episode of Doctor Who‘s new season, titled ‘Death in Heaven’.

Written by Steven Moffat, the episode airs on Saturday 8 November on BBC One and is described by Moffat as “a proper scary one”.

The synopsis reads: “With Cybermen on the streets of London, old friends unite against old enemies and the Doctor takes to the air in a startling new role. Can the mighty UNIT contain Missy? As the Doctor faces his greatest challenge, sacrifices must be made before the day is won.”

The finale is the first two-part story since ‘The Rebel Flesh’ and ‘The Almost People’ in 2011.

Season 8 continues this weekend on BBC One with ‘In the Forest of the Night’.

> Here’s everything we know so far about Season 8.

Are you looking forward to ‘Death in Heaven’? Let us know below…