The second two sections of the book detailed the Olmstaff Method itself: first the text to be spoken, secondly the movements to be made. Lechner wisely divided the two elements to prevent the casual reader from accidentally performing the ritual in its entirety. The professor made it clear in his guidelines that the two elements, the words and the movements, were completely safe if performed separately; only when combined would they activate the body's natural processes.

Still, as you can imagine, I read these two sections with no little trepidation.

The final section of the book was Lechner's improvisation upon the Method's spiritual meaning, which owed a rather heavy debt to Leary's LSD-fuelled take on The Tibetan Book of the Dead. This section is, perhaps, the least interesting.

Indeed, finishing the book still 'alive', as it were, led to a feeling of anticlimax.

And, although I decided I had witnessed nothing more than one of life's sadder coincidences, that night in San Francisco, nothing would make me perform the ritual as per the instructions.

Nothing more was heard of the Olmstaff Method for a few years, until Dr Elizabeth Cunningham published her paper, 'On the Body's Self-Destruction', in the Journal of Alternatives, September 1985. This offered for the first time a medically approved explanation of the Method.

The fact that Cunningham was later arrested for murder should not prevent us from admiring her pioneering and courageous work. In the simplest terms the doctor had discovered a small gland (which now bears her name) in the lower abdomen. The gland had been noted previously, but no use had been found for it. Cunningham connected it to the Method in a very precise way: the combined performance of the spoken text and the ritual exercises activated the gland, which then, and only then, secreted a small amount of poison into the bloodstream. This poison (Lechner's Fluid) very quickly, and quite painlessly, overcomes the body's defences. Death follows within twenty seconds of completing the Olmstaff Method.

Cunningham's work, of course, was highly controversial, not least the fact that she had experimented on human guinea pigs, two of whom had died during the process. Both of them had terminal cancer. They were willing victims, and the doctor had signed-disclaimers proving such. This did not prevent her arrest and subsequent trial for assisted murder, of which she was found guilty. She received a sentence of not less than twenty years.

Cunningham's cause was championed by the euthanasia lobby, who campaigned vigorously on her behalf, alas with little effect. The doctor was found dead in her cell on 1 August 1989. No explanation could be given for her demise. Her trial and death brought the Olmstaff Method to the forefront of public consciousness.

One should not be surprised at this. Suicide has been a constant companion to the human struggle for progress. Before the Method came to light, it was thought that the human psyche contained a fail-safe against self-destruction; witness people's pathetic attempts to hold their breath for long enough to suffocate, or the violent convulsions that pull even the most desperate back to the surface of the darkest lake.

The Olmstaff Method broke this hold over the body's defence, with the added quality of guaranteeing an entirely painless death. Of course, this last fact cannot be empirically verified, but all witnesses of the ritual (myself included) can point to the beatific smile and relaxed posture that accompany the final moments. To quote Lechner's most famous sentence: 'God has provided an off-switch.'

Despite the fact that nineteen separate studies have shown the Method to be a legitimate process of the human physiology, none of the world's governments could be persuaded to make it a legal act, or to allow publication of any books offering instruction. The incident in Denmark sealed the Method's fate, and was the strongest proof yet of its universal effectiveness.

Prior to the incident the world had hardly noticed the so-called Offspring of God's Illumination, beyond a few rumours of the cult's supposed 'sexual worship'. Even the good people of Copenhagen were taken by surprise at the extent of the group's beliefs, when all 207 members were found dead one icy cold morning in October 1992.

The bodies were tested by the Danish authorities for drugs or any other means of self-destruction. It was no surprise to me that they found none, and that the group's final statement gloried in the 'next life that awaited all true believers, through the portals of the Sacred Wound'.

The fact that the Method was undertaken in the Danish tongue is of interest, and can be briefly examined here. It should be remembered that Lechner himself had performed the sacrament in Latin, even though his own book gave the text in plain English. In the introduction to The Sacred Wound he notes that the ritual can be spoken in Latin or English, although he believed the Latin expression to be more pure, 'closer to the wound itself, as he puts it.

Around this time I happened upon an edition of Sir John Bosley's The Cabinet of Night Unlocked. Curiously, although the book is long out of print, it has never been banned in this or any country. Certainly, Bosley's is an academic study, and his translation from the Latin is dense with secondary and tertiary meanings. It is of little use to any but the most convoluted or desperate mind.

It is interesting to compare Bosley's version with Lechner's, mainly because Lechner had simplified the more complicated passages, and even eliminated entire sentences in his quest for the purest form. Both versions are effective, which leads one to believe that the exact nature of the text is of less importance than the overall 'truth' of the sacrament. The same leeway is allowed with the accompanying movements, with different cultures producing their own, slight variations.

Hundreds of illegal translations have been made over the years, and all of them activate Cunningham's Gland successfully. One curious exception is the pictograph language of the K'dhall Islands in New Guinea. Here the Method does not work. Research continues into why this should be so.

Is it any wonder that the Method became so popular? The suicide rate increased noticeably as the ritual became known, not least in death cells around the world. For the victims of painful incurable diseases, it is quite easy to find a doctor who, for a price or for his conscience, will tutor the sufferer in the correct words and the movements. Other stranger rumours abound. For instance, Lechner had stated that the Vatican held similar manuscripts in their vaults, and that the facts had been suppressed for centuries in order to maintain the Christian way of death. Certain warrior sects had known of the Method as long ago as the tenth century, using it to ensure that captured soldiers could kill themselves without succumbing to torture. The US Army is said to have employed the Method in the Vietnam War. It is, perhaps, not entirely untrue that the Method was used to effect a kind of escape from the Nazi concentration camps. One famous, perhaps non-existent heretical text is said to contain certain proof that Jesus the Son of God used the Method in his dying moments on the Cross.

My own obsession with the Olmstaff Method is fuelled by my professional interest in the morality of suicide, and by my personal involvement in the first reported case. With these two not unworthy weapons at my disposal, I was, after a lengthy bureaucratic battle, allowed a brief perusal of the original Cabinet of Night Unlocked.

Sir John Bosley, in his last will and testament, had bequeathed Olmstaff's manuscript to the British Museum, where it was expressly to be kept under lock and key in the rare volumes chamber. I was escorted there, one dismal afternoon in December of last year. I was allowed only one hour with the volume, and the guard was to be with me the whole time, whether for protection of the manuscript, or for protection of the reader, I cannot say.