THE DOCTOR DETECTS AN ALIEN PRESENCE IN EAST London. He decides the best way to deal with the intruder is to lure it into a safe area devoid of people, encircle it in chronodyne generator time mines, and then blast it billions of years into the future via the Time Vortex. A perfect venue for this elaborate trap is Coal Hill Secondary School in Shoreditch, where his companion Clara Oswald is employed as an English teacher. The Doctor tells Clara that he needs to go into “deep cover” somewhere. He then hypnotises Atif, the school caretaker, into believing he has flu. The Doctor arrives on a Monday morning as Atif ‘s temporary replacement, ‘John Smith’.