The arrival of a mysterious comet heralds impending danger from enemies both old and new. As Ace helps the Doctor defend Earth, she is confronted with a dangerous question..."Doctor Who?"
as The Doctor
as Ace
as De Flores
as Lady Peinforte
as Richard
as Mathematician
as Mrs Remington
as Cyber Leader
as Cyber Lieutenant
as Karl
as Himself
as Skinhead 1
as Skinhead 2
