Every day, more and more tourists arrive in Iquitos, Peru, seeking spiritual enlightenment or a psychedelic experience first made popular by William Burroughs and the Beatniks in the 1960s. Unfortunately, some well-paid “shamans” lack the experience or understanding of the powerful and sacred botanical brews used for thousands of years for healing and divination. And the gringos-on-holiday often get over their heads in the wilds of the Amazon.