PYRAMIDS OF MARS
25th October – 15th November 1975
I’m not a human being. I walk in eternity.
Doctor to Sarah, episode 1

Tom as the Doctor with Elisabeth Sladen as Sarah Jane Smith beside an Egyptian mummy case. Picture © BBC
The Doctor has decided to resign his position of scientific advisor to Earth’s alien defence organisation, UNIT. But his announcement is temporarily deferred when the TARDIS arrives at the right place but at the wrong time, some 70 years before the UNIT HQ would be located there. Something has drawn the TARDIS off course, and that something is the power of an Egyptian God, Sutekh (Gabriel Woolf), seeking to break free from ancient bonds cast by his brother, Horus.
Trapped inside an energy bubble surrounding the gardens and woodlands of an old priory in 1911, the Doctor and Sarah have to evade murderous Egyptian mummy-shaped robots, despatched by Sutekh, who is constructing a pyramid-shaped rocket to end his imprisonment deep inside an Egyptian burial chamber.
The Doctor knows his only hope of averting subsequent universal annihilation is by directly confronting his opponent before he frees himself. But how can he prevail against a creature with the mental and physical powers of a God? His one chance … and his only chance, is to use his own knowledge and skills in the manipulation of time.