Assassination of John F. Kennedy
In 1989, the New American Library published "Mafia Kingfish: Carlos Marcello and the Assassination of John F. Kennedy" in which Davis implicated the mafia and Carlos Marcello in the assassination of John F. Kennedy. According to Davis Lee Harvey Oswald and Jack Ruby had "strong ties" to Marcello, and that an Oswald imposter visited the Russian embassies in Cuba and Mexico.