Cass falls through the ice and freezing cold water and drowns -- or she would have, if teen ghost boy, Jacob, hadn't pulled her out of the water and saved her.
Now, they're tied together somehow; he can read her thoughts, and he's haunting her -- but in a good way, because she needs him to help her learn to navigate the Veil, the place between life and death Cass can now open and close at will like a curtain. He's her protector there, as what Cass finds in the Veil isn't always as benevolent as Jacob. Her broken camera, with its shattered lens, can now capture ghostly images.
Cass' parents have scored their own live TV show, hunting ghosts. Her father's a historian and skeptic and her mother's a paranormal believer and chaser. School's out and instead of heading to the shore, they're off to Edinburgh, Scotland, to Mary King's Close, an underground city up to eight stories high that was walled in 1645 with close to 300 residents who were left to die.
There she meets Lara, a girl who initiates Cass into ghost hunting and how to make a spirit pass on, something Jacob's not at all cool with.
Until Cass encounters The Raven, a evil woman ghost who steals her life thread and Cass and Jacob have got to get it back, or Cass will never be able to enter the Veil again. Along the way, they learn The Raven's stolen many, many life threads of hundreds of children and woven them into a thick rope Cass must untangle and set free.
Cass' parents next stop is Paris, France, for a shoot in another iconic underground lair of death -- the catacombs of Paris. This time she and Jacob battle a poltergeist, Thomas, who died in the catacombs while playing hide-and-seek with his brother. They must get him to remember who he was so he can pass beyond the Veil, and stop downing power lines and causing traffic accidents and starting deadly fires.
