Some viewers were also left asking where new Ruth-Doctor was in tonight’s episode as she failed to appear.
One wrote: “Well paced #DoctorWho episode tonight but…where’s Ruth? Don’t leave us guessing!”
Another echoed: “I loved tonight’s #DoctorWho episode for some reasons and disliked it for others, not least as there was no Ruth Doctor.”
“Enjoyed ‘Praxeus’ – traditional story, not quite as padded as some episodes. Missed Doctor Ruth! #DoctorWho,” added a third.
A fourth commented: “I feel like I am going to spend the next few weeks until the finale just going BUT WHAT ABOUT DOCTOR RUTH?! #doctorwho.”
Doctor Who returns on Sunday at 7pm on BBC One.