Murder in manuscript

The murder of a mysterious recluse in Barnet supplies Mr. Budd with one of the most difficult cases of his career. What is the connection between Jonathan Haines, the murdered man, and the typist who is found murdered later that same day? Mr. Budd, with the assistance of crime reporter Bob Hopkins and the melancholy Sergeant Leek, succeeds in piecing together all the fragments of the puzzle - but not until the stout superintendent has suffered the most terrifying experience of his life ...