Ghostwalk: Rebecca Stott

When Elizabeth, a reclusive historian, is found drowned in a tributary of the River Cam, she is clutching a glass prism and has left behind her unfinished magnum opus, a book on Isaac Newtown`s alchemy.

Her son, Cameron, turns to Lydia Brooke, a young writer and friend of Elizabeth`s and asks her to complete the last chapter of the book.

Lydia hesitantly agrees and moves into Elizabeth`s strange house, where she soon finds herself entangled, not only with Cameron, but also with a four-hundred-year-old murder mystery, a network of seventeenth-century alchemists and a ghostly figure intent on disrupting her work.