Summers places the nexus of the assassination in Cuba, and ironically in the shared interest of Castro and Attorney General Robert Kennedy's wish to clamp down on organised crime. For when Castro came to power he kicked out the mobsters but his initial relations with the USA were good. The Cuban political exiles, though, found great sympathy among the chiefs of the CIA, if not in the White House. The CIA were likely to put their support through the mob but with the failure of the Bay of Pigs the exiles' hatred, like the mobsters, turned on the Kennedies. The FBI at the highest level had little to reason to like the brothers, either: it was Robert Kennedy who made Edgar Hoover admit there was an organised crime problem. But Hoover was not totally corrupt, the Bureau was keeping an eye on the exile activity on the southern coast.

There is evidence that from his military service onwards Oswald was used as a double agent (he was not the only veteran to go to the Soviet Union: they all returned as he did, suggesting a standard course). He was featured in newspapers working both the Fair Play for Cuba committee and speaking for the exiles. He went to Mexico to try to get a Cuban visa, but of the three days that "Oswald" went to the embassy on only one of them was the visitor the real Oswald, and the CIA had tapes which showed this. The FBI opened all his mail sent to the Soviet Embassy, the various committees etc. Everybody knew what was going on. Which leads to the question: so how did the assassination happen? Summers can only make suggestions. Why can we not tell what happened? Summers can tell us how the various agencies screwed up and covered up. They may not have intended it, but the killing of the president was a result of all those conflicting interests. Someone as small as Oswald could not juggle all of them all of the time.