Olivia's search for her own father, an airman missing since the Korean War, has brought her to the South Seas and landed her in prison on a trumped-up murder charge. The other main strand of the novel -- based on fact -- is told in the secret diaries of Frank to have been Jack the Ripper. Frank is driven to write down what he knows when he begins to suspect there are people who wish him out of the way. As she fights to get out of jail, Olivia recalls her own childhood in the English house where Henderson once lived. There, while packing up the family home after her mother's death, she finds Henderson's old papers and learns of links between herself and him that she had never known, links that explain her mother's behaviour and her father's disappearance.