The tenth series of Nu Who finally kicked off on Saturday with The Pilot, an episode showcasing new companion Bill Potts, the Doctor's new job as a university lecturer and, in the words of a previous story, a "sinister puddle".
A chance meeting between Bill and Heather ( a girl with a strange star-like marking in her eye ) and the discovery of a strange puddle of something that looks like water but isn't propels the Doctor, Bill and Nardole into a desperate chase across time and space. ( I knew that Tardis wouldn't stay Earthbound for long... )
All in all, a very promising start to the Twelfth Doctor's final run, so I'm giving this:
4 out of 5 Sonic Screwdrivers