Every century has defining moments, every person has defining moments in their life. It could be that first kiss, maybe the birth of your first child. It is a defining moment. It is a moment that the world changes.

In the 20th century there were several defining moments, however the one that is most lucid in my life happened on November 22, 1963. Even though I was only eight years old I remember this day, the day that John F Kennedy lost his life in Dallas, Texas. It is one of those strange things. If you are old enough to have been alive in the early '60s you remember that day, you remember where you were and what you were doing when the news hit.

The assassination of JFK shocked not just a nation, but the whole world. Even though it is now over four decades old, it is still the subject of much discussion. The conspiracy theories abound - was it the CIA, was it the Russians, the Cubans? Or maybe it was aliens! Over the years many different viewpoints have been put forward.

My research shows that about the only common theme between all of the theorists, and indeed historians, is that the official version, the Warren Report, is wrong. Whatever did happen in Dallas was not what the Warren Commission would have us believe. The JFK assassination has to be the holy grail of the conspiracy-minded population.

Someone Would Have Talked is a new book that takes a slightly different approach to the events leading up to, and after, the assassination of JFK. At 620 pages, this is not a quick read. Much of it concentrates on little-known figures and weaves a complex web of intrigue involving many different organizations. This is a book that you probably need a pad of paper and a pen so that you can make notes. I found myself frequently flicking back to re-read a section.

Larry Hancock has obviously invested a huge amount of time in writing this book. There have been several documentaries detailing the physical forensics of the JFK assassination; this is a forensics study of the people involved and their interrelationships.