Doctor Who: Knock Knock (TV) (2017; UK; Colour; 45m) ∗∗∗∗ pr. Nikki Wilson; d. Bill Anderson; w. Mike Bartlett; ph. Damian Bromley; m. Murray Gold. Cast: Peter Capaldi, Pearl Mackie, Matt Lucas, David Suchet, Mariah Gale, Mandeep Dhillon, Colin Ryan, Ben Presley, Alice Hewkin, Bart Suavek, Sam Benjamin. 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? This effective variation on the haunted house plot is a perfectly paced and creepy episode with Suchet excellent as the mysterious Landlord. Capaldi and Mackie are making a great team with their interplay and banter. Great visual effects and make-up.