In 1921, a year before Einstein received the Nobel Prize, De Pretto was shot dead, murdered by a woman over a business dispute. De Pretto was in the process of having a complete book of his scientific ideas published when he was killed. Could Einstein have copied from De Pretto? Nobody can absolutely prove that Einstein saw De Pretto's article but Professor Bartocci offers some intriguing speculation. Professor Bartocci has traced a link between De Pretto and Einstein, through Einstein's best friend, Michele Besso. Besso is the only person credited in the famous E=mc2 paper of 1905.