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
as The Doctor
Matt Lucas
as Nardole
Justin Chatwin
as Grant
Charity Wakefield
as Lucy
Tomiwa Edun
as Mr. Brock
Aleksandar Jovanović
as Dr. Sim
Logan Hoffman
as Young Grant
Daniel Lorente
as Teen Grant
Sandra Teles
as Reporter
Tanroh Ishida
as Operator
Vaughn Johseph
as Soldier
