They're here.
They're watching.
Cass can pull back the Veil that separates the living from the dead.
When Cass's parents start hosting a TV show about the world's most haunted places, the family heads off to Edinburgh.
Here, graveyards, castles and secret passageways teem with restless phantoms.
But when Cass meets & girl who shares her "gift", she realises how much she still has to learn about the Veil - and herself. And she'll have to learn fast. The city of ghosts is more dangerous than she ever imagined.