Research scientist Clive Freeman and his wife Lucy are on the brink of divorce when their daughter is kidnapped, but they need to work together to fathom the cryptic words in her exercise book. This leads them to a duplicitous photographer, and Clive's involvement in the death of the mysterious Mr Nelson. "Francis Durbridge is one of the finest manufacturers of red herrings in the whodunnit business" News of the World "Durbridge...