During the 1970s, Charles Sobhraj went after tourists travelling through southeast Asia's "Hippie Trail'. In December 2022, a Nepali court cut short his life sentence after 19 years in prison. Charles Sobhraj is believed to be responsible for 12 to 24 killings over a decade-long spree. He preyed on tourists travelling through southeast Asia’s "Hippie Trail" during the 1970s and was suspected to drugging victims, killing them, and stealing their identity. This series delivers an unprecedented portrait of one of Asia’s most notorious criminals through a series of unpublished conversations discreetly recorded from the culprit’s jail cell, testimonies of those who know him best – including ex-girlfriends - along with archives and manuscripts written by Charles Sobhraj himself.