The SerpentSeries 1Episode 4BBC One Duration: 58 minutesFirst broadcast: Sun 17th Jan 2021, 21:00 on BBC One HDLatest broadcast: Sun 17th Jan 2021, 21:00 on BBC One Northern Ireland HDCharles embarks on a terrifying trail of destruction in Nepal, while Nadine helps Herman gather the final evidence he needs for the police to act.ContributorsCharles Sobhraj:Tahar RahimMarie-Andrée Leclerc:Jenna ColemanHerman Knippenberg:Billy HowleAngela Knippenberg:Ellie BamberAjay Chowdhury:Amesh EdireweeraPaul Siemons:Tim McInnernyNadine Gires:Mathilde WarnierWriter:Richard WarlowProducer:Stephen SmallwoodDirector:Tom ShanklandProduction Company:Mammoth ScreenGenresDramaBrandThe SerpentSeriesThe Serpent: Series 1 Source: BBC Online