Former detectives re-open the file on suspected serial killer Charles Sobhraj, aka 'The Serpent', who agrees to be interrogated about several murders from the 1970s.
At a final interrogation of suspected killer Charles Sobhraj, the big question remains: is he still a dangerous man?
Experts interview key witnesses to the Thai murders. And a forensic psychologist sets out to establish whether Sobhraj is a psychopath.
As ex-detective Jackie Malton re-examines the horrific killings in Thailand that Sobhraj is accused of, forensic psychologist Paul Britton examines Sobhraj's childhood and motivation
Former detectives re-open the file on suspected serial killer Charles Sobhraj, aka 'The Serpent', who agrees to be interrogated about several murders from the 1970s.
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