The Serpent is a 2021 British crime drama television serial developed by Mammoth Screen and commissioned by the BBC. The eight-part limited series is a co-production between BBC One and Netflix. It is based on the crimes of French serial killer Charles "the Serpent" Sobhraj, who murdered young tourists from 1975 to 1976. The series stars Tahar Rahim in the lead role as Sobhraj. Wikipedia