Cemetery John: The Undiscovered Mastermind of the Lindbergh Kidnapping is a non-fiction book written by American author Robert Zorn.
[1] The books investigate the potential identity of the person who became known as Cemetery John through testimony provided by the author's father.
The identity of Cemetery John has eluded generations of investigators and researchers of the Lindbergh case.
One day he came across an article about the Lindbergh kidnapping in True magazine while waiting to get a haircut in Dallas.
These details triggered the memory of Eugene Zorn, who was certain that as a 15-year-old boy, he had unwittingly witnessed his older neighbor John Knoll with his younger brother, Walter Knoll, conspiring at Palisades Amusement Park in New Jersey with Bruno Richard Hauptmann, the man who went to the electric chair for the murder of the Lindbergh baby.