The minutes of a journey around the world through drugs and 60s, the hippie era, and especially that of a man who, by his choice, lived terrible and fascinating things. From Marseille to Kathmandu, via Beirut, Kuwait City, Bombay, Benares, Baghdad and other cities even before being repatriated to France in a pitiful state, Duchaussois has completed a well eventful life, troubled by dark stories trafficking and murder, tinted mostly by drugs. This story is full of exciting cultural details, an epic in the world, and he brings something extremely important: a sincerity to the drug and its attractions. Yes, the drug is good, it is soft and generous, a nice companion, until, unfortunately, for an event that can bind more strongly to a being, it becomes embedded in daily life and divine parasite, can exhaust the last resources of the body. For the first time the drug attraction, its immediate benefits, it provides virtual trips are exposed in the context of an era that has glorified his use of hashish to heroin, the methods, techniques, varieties, everything is there, both attractive and repulsive. What drugs do you need ...? In a drug that poses? In a drug that makes traveling? Only these two categories exist for Duchaussois, and he clearly explains the nuances and dangers. This book is a work apart, to put in the hands of those that pique curiosity, before they pass syringes. It is true that sometimes the story is so exotic and adventure rate so high that it can lead to dream about the time of its splendor and decadence. However, after the adventure, there is a great misery in the author's attachment to its drug, in the failure of his body, imposed by the lack and excess, we can not be genuinely attracted by the experience of Duchaussois. The latter has also seen much painful years after his return to France, imprisonment, and then a tragic end in solitude and disease. "Flash" is a fabulous story, exciting, but above a piercing warning.