크레딧 출연 Jon Pertwee The Doctor Katy Manning Jo Grant Leslie Dwyer Vorg Cheryl Hall Shirna Tenniel Evans Major Daly Ian Marter John Andrews Jenny McCracken Claire Daly Peter Halliday Pletrac Michael Wisher Kalik Terence Lodge Orum 스텝 Barry Letts Directing Robert Holmes Writing Angela Seyfang Costume & Make-Up Dudley Simpson Sound Terrance Dicks Writing James Acheson Costume & Make-Up Peter Hamilton Camera Clive Thomas Lighting Gordon Mackie Sound Roger Liminton Art Brian Hodgson Crew Barry Letts Production Chris D'Oyly-John Production John Horton Visual Effects Delia Derbyshire Sound