David Anthony Yallop (born 27 January 1937, London) is an agnostic British author who writes chiefly about unsolved crimes. In the 1970s he also contributed scripts for a number of BBC comedy shows. He was also one of the co-authors of Graham Chapman's autobiography, A Liar's Autobiography .
To Encourage The Others (about the Craig/Bentley murder case)
The Day The Laughter Stopped (a biography of Roscoe "Fatty" Arbuckle)
Beyond Reasonable Doubt? (the conviction of New Zealand farmer Arthur Allan Thomas (later pardoned), for the murder of Harvey and Jeanette Crewe) was made into a docu-drama feature film
Deliver Us From Evil (about the Yorkshire Ripper)
In God's Name: An Investigation into the Murder of Pope John Paul I Bantam Books, 1984
To the Ends of the Earth (about the capture of Carlos)
How They Stole the Game (about football)
Unholy Alliance (about the international drug trade and resultant political corruption)
The Power and the Glory (about the Papacy of Pope John Paul II, especially his role in the international community)