The Pyramid at the End of the World
The Doctor is called in by the Secretary General of the U.N. after a pyramid mysteriously appears on the strategic border of the Russian, Chinese and U.S. armies. It’s revealed the Monks are responsible for the pyramid and that they have forseen a disaster through their simulations, offering an opportunity to save humanity if they consent to their rule. Elsewhere in a biochemical lab, a scientist accidentally misreads the levels of chemicals in an experiment releasing a deadly biochemical virus. The Secretary General offers his consent, but is killed when he is viewed to be acting out of fear.
The Doctor summarises that the disaster was unrelated to war, but may be biochemical. After the Doctor and Nardole locate the lab, Nardole collapses following exposure to the virus whilst waiting in the TARDIS. The Doctor with the assistance of Erica, a lab worker, summarises the only way to stop it would be to destroy the lab. He becomes stuck on the side of a manual lock however, due to his blindless.
Bill makes a deal with the Monks to restore The Doctor’s sight despite his protests. He manages to escape but at the expense of handing the planet over to the Monks.
This one holds together better than the previous episode. Bill’s decision at the does seem out of character and is only there as a prequel to the next episode.