Still dazed from the conversation, Yaz joined the Doctor in the console room. She was alone. Yaz saw by the rise and fall of the time-rotor that they were already underway. The Doctor wasn’t wasting a moment. There she stood over the controls, unaware of the call from Doctor Then or her future self’s instruction not to share it with Doctor Now. Yaz could feel a blush rise to her cheeks – she felt as though she was cheating on her. With her.

‘You okay?’ asked the Doctor.

‘Nothing. I mean, yes. I’m fine. How are you?’