This year, Doctor Who broadcasts in the Spring, and episode 4 coincides with our convention! An entire Doctor Who convention watching a brand-new, never-before-seen Doctor Who episode … You can’t get more perfect than that. Episode Title: Knock Knock Written by Mike Bartlett, directed by Bill Anderson. Guest star: David Suchet Bill is moving in with some friends and they’ve found the perfect house! So what if it’s strangely cheap to rent, and the landlord is a little creepy? The wind blows, the floorboards creak and the Doctor thinks something is very wrong. What lurks in the strange tower at the heart of the building – and why can’t they find any way to enter it..?