"We won't find Dracula hanging around the Manor. But we may find
something equally disturbing..."
The Doctor is delighted when his quest for the Key to Time leads him to
his favourite planet, Earth. But his friends are less enchanted: Romana
is nearly lured to her death by a sinister apparition, and K9 is all but
destroyed by a belligerent boulder with the power to move - and a thirst
for blood.
An ancient stone circle becomes a battleground as the Doctor must outwit
the deadliest alien criminal this side of hyperspace - and her
bloodthirsty silicon servants...