Tardis

Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.

READ MORE

Tardis
Advertisement
Tardis

Sto-cats were huge stone robots. "Thousands of millions" of Sto-cats were created by a warlike race called the Kryptolians, and positioned on as many life-supporting planets. The Kryptolians' intended to awaken them (using a short radio-active blast as a signal) after "one million Brelian years".

One Sto-cat was mistakenly activated by the proximity of the nuclear thrusters of the Guerner Transport Ships as the ships landed on the empty planet where it was posted. The Fourth Doctor realised what had happened and managed to talk the Sto-cat into shutting itself down again, lest it endanger the plans of its creators.

Another Sto-cat was posted on Earth and was known to humanity in Sarah Jane Smith's time as the Great Sphinx of Giza. (PROSE: The Sleeping Beast)

Advertisement