Lee Harvey Oswald acted alone. The single bullet theory is valid.....
Wow, why bother to write another CASE CLOSED book?
Actually, There was a British reporter who set up a shooting range to the exact dimensions of Deely Plaza and had a platform located in the position and height where Oswald was.
They shot 3 shots in the allotted time with the same model rifle Oswald used.
They had dummies made with ballistic gel set up like Kennedy and the Governor.
They pretty much proved for me that Oswald was the lone gunner. I guess Fuhrmann discovered the same thing.
BTW: The test was shown on the Discovery Channel