When brain-swapping aliens attack New York, the Doctor and Nardole link up with an investigative reporter and a mysterious masked superhero known only as the Ghost. Can the Doctor save Manhattan? And what will be revealed when we see behind the mask?
Peter Capaldi
The Doctor
Matt Lucas
Nardole
Justin Chatwin
Grant
Charity Wakefield
Lucy
Tomiwa Edun
Mr. Brock
Aleksandar Jovanović
Dr. Sim
Logan Hoffman
Young Grant
Daniel Lorente
Teen Grant
