On screen
Cast
15 credited performers
Caroline John
Dr. Elizabeth Shaw
Jon Pertwee
Dr. Jeremiah O'Kane
Sylvester McCoy
Dr. Colin Dove
Colin Baker
Peter Russell
Mark Gatiss
Dr. William Bruffin
Louise Jameson
Patricia Haggard
Sophie Aldred
Public Relations Officer
Linda Lusardi
Louise Bayliss
Artwork unavailable
David Terence
Daniel O'Kane / Eustace O'Kane
Artwork unavailable
Nicola Fulljames
Dr. Beatrice Hearst
Artwork unavailable
Patricia Merrick
Dr. Julie Gilchrist
Jonathan Rigby
Cummings
Alexander Kirk
Orderly
Artwork unavailable
Daniel Mills
Ghostly Child Voice
Peter Davison
Patient One