Clara is the new governess at the Williams household in Victorian London. With the position she befriends the widowed Rory Williams and his two kids, the amusing staff, and the mysterious Doctor Smith who lives upstairs. He's strange and Clara has never been good at resisting her curiosity 11/Clara Amy/Rory and one-sided Amy/11

Part II of the Doctor & Clara's story: With mysteries everywhere they go, the Doctor and Clara try to find the answers. The biggest mystery by far is that of a a woman almost as impossible as the Impossible Girl herself. The Doctor has his suspicions which seem to be confirmed, but that only creates more questions which doesn't help them when the Darkness begins to get closer...

It's 1888, the Autumn of Terror and Jack the Ripper stalks the streets of London. Clara, a young governess, becomes intrigued by the reclusive Doctor. But who will she believe when people start to think that the Doctor is behind the murders? And what will the Doctor do when he discovers Clara is the next victim?