SHOCKING new revelations suggest American legend CHARLES LINDBERGH was involved in the abduction – and subsequent death – of his 20-month-old son Charles Jr.!

Plucked from his parents’ remote home in Hopewell, N.J., in March 1932, the baby’s demise led to one of the most dramatic trials in U.S. history – and many believe the chilling crime is STILL unsolved despite the conviction of Bruno Hauptmann.

In a recent addition to his 2004 book, “The Case That Never Dies”, acclaimed historian and author Lloyd C. Gardner pins the blame on Lindbergh himself!

Gardner, an emeritus history professor at New Jersey’s prestigious Rutgers University, claims the famous aviator may have orchestrated the kidnapping and murder of his own son. The tot was found dead from a skull fracture in woods near the Lindbergh estate – after $50,000 in ransom was paid.

Hauptmann was convicted for the kidnapping after he was found with money that had serial numbers  matching greenbacks used to pay the ransom. But he always claimed he had nothing to do with the  crime. Protesting his innocence to the end, he was executed in New Jersey on April 3, 1936.

Now Gardner’s blockbuster new research reveals the man who made history by becoming the first pilot to fly solo across the Atlantic Ocean may have had a secret motive for the crime!

The expert reveals Lindbergh’s son had an abnormally large cranium, unfused skull bones and overlapping toes. The boy actually had trouble standing. But a pre-trial deposition downplayed the child’s birth defects and merely described his health problems– chilling new charge as a “moderate rickety condition.”

Little Charlie’s imperfection greatly troubled Lindbergh, who was fascinated with eugenics – improving human hereditary traits through breeding – the author charges.

“What we know about Lindbergh’s character is his desire to spread his healthy genes and his belief in the eugenics movement, which goes hand in- hand with his pro-German feelings before the war,” writes  Gardner.

“His secret affairs later in life, starting in 1957, with three women in Germany, two of them sisters, which led to seven children besides the six he had with his wife, Anne Morrow Lindbergh, are reminiscent of an experiment.”

Lindbergh, who’d shot to fame in 1927, believed in the racial superiority of northern Europeans.

So his son’s condition was hidden from the public and law enforcement.

Gardner claims Lindbergh isolated household staff and prevented questioning by authorities including J. Edgar Hoover and his investigators.

At first he “insisted that the police not attempt to find the perpetrator because he feared the investigation would endanger his son’s life,” says Gardner. “He relented only when the child was found dead.”

Then he had the boy’s body quickly cremated after a cursory autopsy, says the author. And Gardner doesn’t buy the official story of the kidnapping: That one man (Hauptmann) could have climbed a ladder propped against the house up to the second floor nursery window during a rainstorm, entered and left with the child without being detected.

Plus, Gardner says, there’s no evidence that an intruder had even been in Lindbergh’s home!

“There were no muddy footprints on the floor of the nursery leading back to the window nor any handprints or blood anywhere, and the screen around the crib was undisturbed,” says the author. “There was a chest pushed up against the windowsill so an intruder would have had to launch himself about three feet to get into the room.  Getting back out with the baby would have been even harder.”

Gardner’s theory about Lindbergh’s involvement isn’t that farfetched, says an expert. Mark Falzini, an archivist for one of the largest repositories of material on the case, says Gardner’s theory shouldn’t be dismissed. “It’s something that needs to be seriously looked at,” says Falzini.