• "O’Neill's investigations started twenty years ago…and they have continued ever since … His research monomaniacally took over his life … [Full of] scandalous findingsAs it develops, O'Neill's tale embroils an increasingly stellar cast of accomplices or enablersNo unified field theory of malfeasance would be complete without a link to the JFK assassination and the ensuing cover-up. O’Neill supplies one, and to me it seems only too plausible. Inevitably there are contemporary resonancesO’Neill's intricately sinister ‘secret history’ often sounds incredible; that doesn't mean that it's not all true."

  • "O’Neill is no conspiracy theorist. He’s meticulously grounded and fair minded…it’s a credible insight into the underground sixties and the authorities reaction to it."

    NB Magazine
  • "There’s no sign here of the insane logic that squares a paranoid circle, but instead plenty of legwork, phone calls, interviews, scrutiny of motives, weighing of hearsay, and a degree of finger-pointing…CHAOS diverts attention away from the mythologised – for good or ill – ‘Sixties’ to a deeper-rooted, more tenacious American pathology."

    Shiny New Books