The Truth Against the World

In her parents' San Francisco flat, Olwen Nia Evans, Wyn for short, has been having unsettling dreams about her family's past in Wales. But her dreams don't match up with what she's been told by her dying grandmother, Rhiannon. On the other side of the world, in London, a boy named Gareth Lewis is having disturbing dreams about a frightening encounter with a ghost. A ghost named Olwen Nia Evans.
When he looks for Olwen's name online, Gareth connects with Wyn in San Francisco as she is preparing to move with her family to fulfill Rhiannon's last wish to die in Wales. Once Wyn arrives in Wales, she and Gareth join forces to discover the truth of the lost soul that's haunting them both.