Doctor Who S10 E06 Extremis

Doctor Who S10 E06 Extremis : In the Haereticum (the Vatican’s secret library of blasphemy) there is an ancient book known only as The Veritas. Throughout history, anyone who has ever read it has immediately taken their own life. Now a new translation is online, and the danger is spreading. The Vatican appeals to the Doctor. Will he read The Veritas? But can even the Doctor survive the ultimate truth?