The BBC have confirmed the synopsis for episode 1 of series 10.
Two worlds collide when the Doctor meets Bill.
A chance encounter with a girl with a star in her eye leads to a terrifying chase across time and space. Bill’s mind is opened to a Universe that is bigger and more exciting than she could possibly have imagined – but who is the Doctor, and what is his secret mission with Nardole on Earth?
Peter Capaldi returns as the Doctor for his third and final series accompanied by new companion Bill played Pearl Mackie and anti-companion Nardole played by Matt Lucas.
This brand new episode written by Steven Moffat premieres on April 15th on BBC America at 9/8c and BBC One, time to be confirmed.