Carole Ann Ford narrates the complete TV soundtrack of this eerie adventure set entirely on board the TARDIS. "We are at the very beginning..." Escaping from their previous adventure on Skaro, the Doctor, Susan, Ian Chesterton (William Russell) and Barbara Wright (Jacqueline Hill) are inside the TARDIS when it appears to be taken over by an outside force. Bewildered and confused, the travellers become suspicious of each...