BBC has released some stunning photos for Doctor Who Episode 4 – Knock Knock.  You’d better be prepared to be scared.  There’s also a stunning new monster and looks a bit like Groot’s sister.

‘Knock Knock’ written by Mike Bartlett (Doctor Foster) and directed by Bill Anderson will premiere on May 6th on BBC One.

Official Synopsis

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?

The Doctor (Peter Capaldi), Bill Potts (Pearl Mackie) and Nardole (Matt Lucas) will be joined by guest star David Suchet who plays the mysterious Landlord.

Special Binaural Audio Edition

Following the episodes broadcast on BBC One, a special binaural audio edition will be made available on BBC iPlayer. This special creates a 3D surround sound effect for anyone wearing headphones, placing them at the heart of the action.

This new series was shot in Cardiff at BBC Wales Roath Lock Studios and is produced by BBC Studios Wales.

Doctor Who - Knock Knock - The Landlord - (C) BBC - Photographer: Simon Ridgeway
Doctor Who – Knock Knock – The Landlord – (C) BBC – Photographer: Simon Ridgeway
Doctor Who - Knock Knock - Monster - (C) BBC - Photographer: screen grabs
Doctor Who – Knock Knock – Monster – (C) BBC – Photographer: screen grabs
Doctor Who - Knock Knock - Bill (PEARL MACKIE) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – Bill (PEARL MACKIE) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - The Doctor (PETER CAPALDI) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – The Doctor (PETER CAPALDI) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - The Doctor (PETER CAPALDI), Bill (PEARL MACKIE) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – The Doctor (PETER CAPALDI), Bill (PEARL MACKIE) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock -Bill (PEARL MACKIE) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock -Bill (PEARL MACKIE) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - Young Landlord (TATE PITCHIE-COOPER) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – Young Landlord (TATE PITCHIE-COOPER) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - The Landlord (DAVID SUCHET) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – The Landlord (DAVID SUCHET) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - The Landlord (DAVID SUCHET) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – The Landlord (DAVID SUCHET) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - The Landlord (DAVID SUCHET) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – The Landlord (DAVID SUCHET) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - Shireen (MANDEEP DHILLON), Bill (PEARL MACKIE), The Doctor (PETER CAPALDI), Paul (BEN PRESLEY) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – Shireen (MANDEEP DHILLON), Bill (PEARL MACKIE), The Doctor (PETER CAPALDI), Paul (BEN PRESLEY) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - Felicity (ALICE HEWKIN), The Doctor (PETER CAPALDI) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – Felicity (ALICE HEWKIN), The Doctor (PETER CAPALDI) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - Pavel (BART SUAVEK) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – Pavel (BART SUAVEK) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - Pavel (BART SUAVEK) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – Pavel (BART SUAVEK) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - Pavel (BART SUAVEK) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – Pavel (BART SUAVEK) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - Bill (PEARL MACKIE), episode 4 monster - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – Bill (PEARL MACKIE), episode 4 monster – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - The Landlord (DAVID SUCHET), The Doctor (PETER CAPALDI), episode 4 monster - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – The Landlord (DAVID SUCHET), The Doctor (PETER CAPALDI), episode 4 monster – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - The Landlord (DAVID SUCHET) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – The Landlord (DAVID SUCHET) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - Bill (PEARL MACKIE), The Landlord (DAVID SUCHET) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – Bill (PEARL MACKIE), The Landlord (DAVID SUCHET) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - The Doctor (PETER CAPALDI), Bill (PEARL MACKIE), The Landlord (DAVID SUCHET) - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – The Doctor (PETER CAPALDI), Bill (PEARL MACKIE), The Landlord (DAVID SUCHET) – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - The Landlord - (C) BBC/BBC Worldwide - Photographer: Simon Ridgway
Doctor Who – Knock Knock – The Landlord – (C) BBC/BBC Worldwide – Photographer: Simon Ridgway
Doctor Who - Knock Knock - Bill (PEARL MACKIE) The Doctor (PETER CAPALDI) - (C) BBC/BBC Worldwide - Photographer: Jon Hall
Doctor Who – Knock Knock – Bill (PEARL MACKIE) The Doctor (PETER CAPALDI) – (C) BBC/BBC Worldwide – Photographer: Jon Hall
Doctorw Who - Knock Knock - The Doctor (PETER CAPALDI) - (C) BBC/BBC Worldwide - Photographer: Jon Hall
Doctorw Who – Knock Knock – The Doctor (PETER CAPALDI) – (C) BBC/BBC Worldwide – Photographer: Jon Hall
Doctorw Who - Knock Knock - The Landlord (DAVID SUCHET) - (C) BBC/BBC Worldwide - Photographer: Jon Hall
Doctorw Who – Knock Knock – The Landlord (DAVID SUCHET) – (C) BBC/BBC Worldwide – Photographer: Jon Hall
Doctor Who 'Knock Knock' - (C) BBC/BBC Worldwide - Photographer: Jon Hall
Doctor Who ‘Knock Knock’ – (C) BBC/BBC Worldwide – Photographer: Jon Hall
Doctorw Who - Knock Knock (C) BBC/BBC Worldwide - Photographer: Jon Hall
Doctorw Who – Knock Knock (C) BBC/BBC Worldwide – Photographer: Jon Hall
Doctorw Who - Knock Knock (C) BBC/BBC Worldwide - Photographer: Jon Hall
Doctorw Who – Knock Knock (C) BBC/BBC Worldwide – Photographer: Jon Hall
Doctorw Who - Knock Knock (C) BBC/BBC Worldwide - Photographer: Jon Hall
Doctorw Who – Knock Knock (C) BBC/BBC Worldwide – Photographer: Jon Hall

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Susan Hewitt is the Editor and Site Owner of Blogtor Who. She has loved all Doctor Who for over 5 decades now. Prisoner, Blake-7, Space-1999, Star Wars and Star Trek were also huge favourites. Her favourite Doctor is Tom Baker with Peter Capaldi following in a close second. However, David Tennant does rank as one of her favourite actors particular due to his brilliant work in theatre. She followed her heroes and became an Electrical Engineering in the semiconductor industry and worked for ATI, AMD and ARM. She is the CTO of Ryff when she isn't writing or editing Blogtor Who.

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