After initially being announced as appearing in only three episodes of Doctor Who this year (specifically this Saturday’s episode six and the two-part finale), it’s been revealed that Michelle Gomez’s villain Missy will crop up in even more of the sci-fi series.

In an official synopsis of series 10’s eighth episode (called Lie of the Land and written by Being Human creator Toby Whithouse), the BBC have named Gomez as a special guest star, with the Scottish actress joining Peter Capadi’s Doctor, Pearl Mackie’s companion Bill and Matt Lucas’ Nardole as they take on a sinister mass delusion.

You can read the full synopsis below:

 The world is gripped by a mass delusion and only Bill Potts can see the truth. When even the Doctor is fighting on the wrong side, it’s up to Bill to convince the Time Lord that humanity is in deadly danger. And if she can’t do that, she may just have to kill her best friend…

The Doctor is played by Peter Capaldi, Bill by Pearl Mackie and Nardole by Matt Lucas. Michelle Gomez guest stars as Missy.

Based on this intriguing summary, it could be that Bill has to enlist Missy’s help when even the Doctor is taken over by the delusion, in the sort of reluctant team-up previously undertaken by Missy and Jenna Coleman’s Clara in 2015 episode The Witch’s Familiar.

Alternatively, we might find out that the former Master actually has a hand in the vast deception, duping even her old friend in her devious schemes.

OR it could be that she just turns up at the end in a brief cameo intended to set up her role in the latter part of the series. Either way, we’re not sorry to get more Missy for our money in this series.

Doctor Who continues on BBC1 this Saturday at 7.25pm