This book is a record of Jim Garrison, Prosecuting Attorney in New Orleans, attempt to prosecute those responsible for the assassination of President John F. Kennedy. His contention is that the assassination was a conspiracy involving the CIA and the military industrial complex, and that it was, in effect, a coup d'etat. This book was used as one of the basis for the movie, JFK. Although he did try Clay Shaw for the assassination, a jury found him (Clay Shaw) innocent.