Zoë Castillo is about to get involved in a conspiracy that spans parallel worlds and hundreds of years. Something is affecting our world: static interference disrupts technology, and it seems to be linked to a ghostly presence seen only by a few – a presence inhabiting a black house in a wintry landscape. As Zoë begins her search for a lost friend, she discovers that there is a magical world behind our own – and the search is now on for the one person who may help Zoë unravel the dangerous web she has become entangled in: April Ryan.