 Due to the BBCs policy of junking episodes in the 1970s, this  episode no longer exists in the archives. Several clips survive in  the form of an 8mm home movie reel shot off a television set. They  are: two seconds of The Doctor in Robespierres office; three  seconds of Ian talking in Jules house just after his planned  escape; one second of Ian talking the following morning, hoping he  can trust the physician; one second of Susan lying down in the  physicians surgery; and three seconds of Susan looking worried as  Barbara tries to open the surgery door.