We knew that UNIT and its fearless leader Kate Lethbridge-Stewart would continue to play a role Doctor Whothe universe of The show included them a lot in theirs 60th Anniversary Specials, where Donna became another former companion to join their ranks. There is even one spin-off of UNITA in the works on Disney+. This season's trailer showed the Fifteenth Doctor and Ruby at UNIT HQ. But surprisingly we got a cameo with Kate Lethbridge-Stewart and UNIT this week Doctor Who adventure “73 Yards” focuses heavily on Ruby's quest to find out why a mysterious (and creepy) old woman is following her around. The problem is that the Doctor has disappeared and she has to figure it out for herself.
A year after her ordeal, Ruby is left cold and broken without family or doctor. Oh, and this woman is still following her from 73 meters away. She eventually bonds with Kate, who meets her in a public place with a plan for his UNIT soldiers to capture the woman. Their conversation is brief with Kate wondering why Ruby didn't contact her sooner. Kate thinks the Doctor went silent for some reason and wants Ruby to take her to the TARDIS. He seems to want to offer Ruby a place in UNIT, but this never comes through. When the soldiers approach her, all of her shielding technology fails. They, like everyone else, hear her say something and run away, as does Kate, who is wearing an earpiece.
We don't see Kate or UNIT anymore, so Ruby is left to live with the lady for 65 years. In the end, it's an old woman who finally hugs the woman, who turns out to be her. Time resets and Old Ruby tells present Ruby to tell the Doctor not to enter this circle. We can assume that all is well once again. And we know it we will see Kate and UNIT in the future.
