BBC America has released twenty-three pictures for “Extremis,” the sixth episode of Doctor Who series 10, which airs Saturday, May 20th, at 9 PM EDT.

Gallery and description:

EPISODE SIX – EXTREMIS – SATURDAY, MAY 20, 9/8c ‘The Veritas. The truth. Truth so true you can’t live with it. Is that looking into hell … or seeing the light?’ Everyone who has ever read the Veritas has been found dead. In a forbidden library at the heart of the Vatican, the Pope urges the Doctor to read the ancient text – but can he handle the truth? Written by Steven Moffat.

BBC America has also released the description for episode seven:

EPISODE SEVEN – THE PYRAMID AT THE END OF THE WORLD – SATURDAY, MAY 27, 9/8c An ‘ancient’ pyramid appears overnight. Every clock in the world begins counting down to the Earth’s destruction. Three opposing armies lie ready to annihilate each other. An alien race stands ready to offer humanity a deal that could save them, but enslave them. It’s a terrifying race against time to save the world! Will the Doctor be forced to accept their help? Written by Peter Harness and Steven Moffat