Cast
Tom Baker
The Doctor
Mary Tamm
Romana
John Leeson
K-9 (voice)
John Woodvine
Marshal
Lalla Ward
Princess Astra
Davyd Harries
Shapp
Ian Saynor
Merak
Ian Liston
'Hero'
Susan Skipper
'Heroine'
John Cannon
Guard
Iain Armstrong
Technician
Pat Gorman
Pilot
Harry Fielder
Guard
William Squire
The Shadow
Barry Jackson
Drax
Valentine Dyall
The Black Guardian
