Ghostwalk

A Cambridge historian, Elizabeth Vogelsang, is found drowned, clutching a glass prism in her hand. The book she was writing about Isaac Newton’s involvement with alchemy–the culmination of her lifelong obsession with the seventeenth century–remains unfinished. When her son, Cameron, asks his former lover, Lydia Brooke, to ghostwrite the missing final chapters of his mother’s book, Lydia agrees and moves into Elizabeth’s house–a studio in an orchard where the light moves restlessly across the …