Ghosts have always walked there. Now they're not alone...

In 1891, Edinburgh's Henderson Close is a seething mass of humanity, poverty, crime, and degradation. Even murder. Miss Carmichael is a middle-aged spinster, living in the prosperous New Town. She regularly takes food, money, and clothing to families living in the Closes, deep within the slums of the Old Town. In the present day, Henderson Close, having been buried under the foundations of newer buildings a century earlier, is a major tourist attraction.

In the depths of Edinburgh, an evil presence is released. Hannah and her colleagues are tour guides who lead their visitors along the spooky, derelict Henderson Close, thrilling them with tales of spectres and murder. For Hannah it is her dream job, but not for long. When renovations begin to extend the location, the Auld De'il is released from its devil's trap – and even the spirits are afraid.

Who is the mysterious figure that disappears around a corner? What is happening in the old print shop? And who is the little girl with no face? The legends of Henderson Close are become all too real and the ghost stories told by the tour guides begin to take on a sinister reality.