the 'crème de la crème' of greatest thinkers to help her fire a rocket, destroying a strange matter asteroid, turning the entire planet into a huge Time Manipulator. Now unwilling to help, the Rani places the Doctor alongside the other great intellects and is having his brain drained of his knowledge. But the Doctor outwits her, causing a delay in her calculations and foiling her plans. Beyus then sacrifices himself to destroy her equipment, thus stopping her from trying again. The others are horrified she quickly escapes to her Tardis, but the Doctor seems to know the truth. Her Tetrap servants realized she was going to double cross them, so they've beat her to the punch. They are now in control of her Tardis with her captured.