크레딧 출연 William Hartnell The Doctor Jacqueline Hill Barbara Wright William Russell Ian Chesterton Maureen O'Brien Vicki Ray Barrett Bennett / Koquillion Tom Sheridan Space Captain (voice) John Stuart Didonian (uncredited) Colin Hughes Didonian (uncredited) 스텝 Daphne Dare Costume & Make-Up Sonia Markham Costume & Make-Up Raymond Cusick Art Christopher Barry Directing David Whitaker Writing Dennis Spooner Writing Verity Lambert Production Mervyn Pinfield Production Tristram Cary Sound