Hunting 'The Serpent': the diplomat turned detective

There are disturbing descriptions throughout this episode. In the 1970s a serial killer was on the loose in South East Asia. His name was Charles Sobhraj, better known as 'The Serpent'. When tourists began going missing, or turning up dead, Dutch diplomat Herman Knippenberg was tasked with investigating the disappearances. The chilling evidence he uncovered put Sobhraj behind bars with a life sentence. The hit TV show The Serpent is available now on BBC iPlayer and Netflix. Presenter and producer: Saskia Edwards Picture: collage of promotional photos from BBC One and Netflix's The Serpent and Herman Knippenberg's personal collection Credit: BBC / © Mammoth Screen and Herman Knippenberg Get in touch: outlook@bbc.com