The Kasaavin were ghost like creatures from a different universe and they were allied with the Master and Daniel Barton (Spyfall). They were able to kill people just by walking into them and they intended to conquer our universe. Thankfully, the Thirteenth Doctor and her friends were able to defeat the Kasaavin and the Master and thwart Barton’s evil plans!

Spyfall

★★★★★

TX: 01–05/01/2020

Written by Chris Chibnall   Directed by Jamie Magnus Stone & Lee Haven Jones

The Thirteenth Doctor, Graham, Ryan and Yaz are summoned to MI6 by Q. However, the TARDIS narrowly escape being killed in their car escort before making it to HQ. Q informs the Doctor and her fam that they are investigating tech billionaire and philanthropist Daniel Barton. MI6 believes that Barton is connected to some mysterious deaths and some ghosts called the Kasaavin. The Doctor reminds Q that U.N.I.T and Torchwood are both gone now and that it is now down to them and MI6 to stop Barton. Q also starts to tell the Doctor about his field agent O who disappeared when Q is assassinated. The Doctor and her fam retreat back to the TARDIS, but the Kasaavin follow them. The TARDIS lands in the Australian outback where they meet O who has been stationed there with two other operatives. The Kasaavin attack the cabin at nighttime, but the Doctor captures one of them. The Kasaavin reveal that they originate from another universe and that they intend to conquer ours. While sneaking into VOR’s headquarters with Ryan, Yaz is attacked by a Kasaavin and he is transported to a strange environment full of vines. The captured Kasaavin frees itself by swapping with Yaz, leaving her in O’s base. Ryan is brought to Australia and he regroups with Yaz, Graham and the Doctor. Joined by O, the four investigate Barton at his birthday party. After being confronted by the Doctor, Barton denies all accusations put to him and angrily leaves in his car. The Doctor and her companions pursue Barton on motorbikes to his private jet. Leaping aboard said jet, O is revealed to be the Master – having been in control of Barton and the aliens the whole time. Barton then disappears from the pilot seat, leaving a bomb in his place. The Master says to the Doctor, “One thing I should tell you in the seconds before you die: Everything that you think you know, is a lie”. The device detonates, shattering the nose of the plane and sending it into a nose dive.

The Master teleports to his waiting TARDIS and two of the Kasaavins cause the Doctor to disappear from the plane, reappearing in the same environment Yaz was in earlier; leaving the others in the falling plane. In the dimension of the aliens, now revealed to be Kasaavins, the Doctor meets computer pioneer Ada Lovelaceand grabs her hand when a Kasaavin appears, transporting them to an invention exhibition in 1834, where they encounter the Master. Though the Master knows the aliens’ name and intentions, the Doctor realises he does not fully understand them when he asks her how she escaped their dimension. The Kasaavin are similar to the ghosts that turn out to be Cybermen in Army of Ghosts/Doomsday. Ada takes her to the residence of polymath Charles Babbage, where the Doctor summons a Kasaavin via a figurine identical to the one in Barton’s office, hoping to return to the 21st century. Ada suddenly grabs the Doctor’s hand as she fades and they accidentally travel to Paris during World War II instead. They are rescued by British spy Noor Inayat Khan, though the Master continues to pursue them, posing as a Nazi officer through the use of a perception filter. The Doctor meets with the Master atop the Eiffel Tower, where the latter reveals that he had the Kasaavins kill spies in order to get the former’s attention and claims that Gallifrey has been destroyed. With help from Ada and Noor, the Doctor destroys the Master’s filter and turns the Nazis on him while her group uses his TARDIS to return to the present. Back in the present, Ryan finds instructions to safely land the plane with help from a recording of the Doctor. By the time the companions land, Barton and The Master has branded them persons of interest, setting off a worldwide manhunt for them. Despite this, they manage to steal one of Barton’s cars, which takes them to a warehouse containing the figurine. Speaking at a conference, Barton reveals that the Kasaavins will rewrite humanity’s DNA to utilise its storage capacity as hard drives. The Master, forced to live through the 20th century without his TARDIS, arrives in time to see the figurine device activate, only for it to fail after the Doctor planted a virus in it in the past. Just before the Kasaavins are forced back to their dimension, the Doctor exposes the Master’s treachery and they take him with them while Barton escapes from the conference. After setting up the means for her companions to survive the plane crash, the Doctor returns Ada and Noor to their respective time periods and wipes herself from their memories. The Doctor also visits Gallifrey’s ruins to confirm the Master’s claim, where she discovers a recording of him confessing to destroying their home planet after realising their understanding of Time Lord history was a lie based on the “Timeless Child.” (The Ghost Monument, Ascension of the Cybermen/The Timeless Children, The Church on Ruby Road). Afterwards, her companions bluntly request the Doctor explain who she is, so she tells them of what she believes to be her backstory.