The new trailer! View this video on YouTube youtube.com And the first four episode synopses. imgur.com / Via doctorwho.tumblr.com The Doctor’s search for Clara Oswald brings him to modern day London, where Wi-Fi is everywhere. Humanity lives in a Wi-Fi soup. But something dangerous is lurking in the signals, picking off minds and imprisoning them. As Clara becomes the target of this insidious menace, the Doctor races to save her and the world from an ancient enemy. Episode credits: Written by Steven Moffat, directed by Colm McCarthy (Ripper Street, The Tudors), and produced by Denise Paul (Taggart). imgur.com / Via doctorwho.tumblr.com Clara wants to see something awesome, so the Doctor whisks her off to the inhabited rings of the planet Akhaten, where the Festival of Offerings is in full swing. Clara meets the young Queen of Years as the pilgrims and natives ready for the ceremony. But something is stirring in the pyramid, and a sacrifice will be demanded. Episode credits: Written by Neil Cross (Mama, Luther), directed by Farren Blackburn (Luther, The Fades) and produced by Denise Paul imgur.com / Via doctorwho.tumblr.com The Doctor and Clara land on a damaged Russian Submarine in 1983 as it spirals out of control into the ocean depths. An alien creature is loose on board, having escaped from a block of Arctic ice. With tempers flaring and a cargo of nuclear weapons on board, it’s not just the crew but the whole of humanity at stake!Episode credits: Written by Mark Gatiss (Sherlock) and directed by Douglas Mackinnon (Silent Witness). imgur.com / Via doctorwho.tumblr.com Clara and the Doctor arrive at Caliburn House, a haunted mansion sat alone on a desolate moor. Within its walls, a ghost hunting Professor and a gifted psychic are searching for the Witch of the Well. Her apparition appears throughout the history of the building, but is she really a ghost? And what is chasing her?Episode credits: Written by Neil Cross and directed by Jamie Payne (The Hour, Call the Midwife).