Joseph Bonanno
In the 1960s, Joseph Bonanno, in a plot to take over The Commission, plotted the murder of Mafia bosses Thomas Lucchese, Carlo Gambino, and Stefano Magaddino, and then added DeSimone to the list for good measure. Although never carried out, DeSimone didn't learn about that plan until after it was thwarted. This caused DeSimone to become very paranoid.