13. James Brown. No one knows if his body is actually in the crypt where it is supposed to be. There is a vial of his blood from the night he died that is meant to contain traces of a drug that was put into his blood stream but it has been in a queue to be tested for years. The woman who is suspected of administering the drug that killed him confessed to a friend she did it but then took it all back and called it a dream. A duffel bag was then found with clothes covered in the drug (think it was PCP or something) that killed him and matched the description of the dream. And this is before you get to all the shady shit that James Brown got up to when he was alive including possibly arranging the murder of his wife and running some sort of small league mafia. He tried to get out of the control of his agent and family members a couple of months before he died and they took over control of the estate. Multiple people who have tried to question the official story have been threatened, including the reporter.
14. Rudolf Diesel, inventor of the Diesel engine.
On the evening of 29 September 1913, Diesel boarded the GER steamer SS Dresden in Antwerp on his way to a meeting of the Consolidated Diesel Manufacturing company in London, England. He took dinner on board the ship and then retired to his cabin at about 10 p.m., leaving word to be called the next morning at 6:15 a.m.; but he was never seen alive again. In the morning his cabin was empty and his bed had not been slept in, although his nightshirt was neatly laid out and his watch had been left where it could be seen from the bed. His hat and neatly folded overcoat were discovered beneath the afterdeck railing.