Conspiracy book is filled with the usual suspects and some unusual ones

Sure, we all know the one about the second gunman on the grassy knoll. And thanks to a little book by Dan Brown, we know that Leonardo Da Vinci may or may not have slipped Mary Magdalene into The Last Supper.

But did the Titanic sink because of a secret fraud conspiracy? Are Nazis hanging out in Antarctica? Was a CIA experiment in mind-control behind the Jonestown massacre?

James McConnachie and Robin Tudge lay out these theories and many, many more in The Rough Guide to Conspiracy Theories (Rough Guides, $14.99), which bills itself as "the definitive guide to the world's most controversial conspiracies