We love nothing more than an excellent BBC drama and brand new crime thriller The Serpent is one we can't wait to get stuck into.
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The series, which tells the remarkable real-life story of how the conman and murderer Charles Sobhraj was brought to justice, looks like it's going to be an utterly gripping watch from start to finish and has a stellar cast too. So who will be starring in the show? Meet the main cast below…
Tahar Rahim - Charles Sobhraj
Tahar Rahim takes on the lead as notorious conman and murderer, Charles Sobhraj, who he describes as "a very manipulative man, a narcissist, and as sadistic as he is evil".
© Photo: BBCTahar Rahim as Charles
The French-Algerian actor is perhaps best known for his role in the award-winning French movie A Prophet. His next role is in the highly-anticipated big screen legal drama The Mauritanian which has been tipped as an Oscar contender.
Jenna Coleman - Marie-Andrée Leclerc
Playing Charles' accomplice Marie-Andrée Leclerc is Jenna Coleman who is best known for her roles as Clara Oswald in Doctor Who and Queen Victoria in ITV's period drama, Victoria.
© Photo: BBCJenna Coleman as Marie-Andrée
Of her character's relationship with the cold-blooded killer, Jenna told the BBC: "He represents everything to her that is exciting and everything she feels she hasn't had in her life so far, so she kind of becomes obsessed.
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"I think she's a real romantic and she places so much faith and love in him, and it becomes a kind of obsessive, delusional addiction with him. The reality is very, very different to the narrative that she creates."
Billy Howle - Herman Knippenberg
Herman Knippenberg is diplomat who ensnares 'the Serpent', after unwittingly walking into Charles' intricate web of crimes. Playing Herman is Billy Howle, who has appeared in shows such as Vera, MotherFatherSon and Glue. Billy has also had roles in several blockbuster films including Star Wars and Dunkirk.
© Photo: BBCBilly Howle as Herman
Ellie Bamber - Angela Knippenberg
Playing Herman's wife Angela is Ellie Bamber. Ellie first shot to fame after appearing in Tom Ford's award-winning thriller Nocturnal Animals and has previously had roles in BBC One's Les Misérables miniseries and The Trial of Christine Keeler.
© Photo: BBCEllie Bamber as Angela
Amesh Edireweera - Ajay Chowdhury
Newcomer Amesh Edireweera plays Charles' right-hand man, Ajay Chowdhury. Speaking about his first on-screen role, the actor said: "Every day was a masterclass. It is truly incredible to have worked alongside and be able to learn from these phenomenal actors."
© Photo: BBCAmesh Edireweera as Ajay
Mathilde Warnier - Nadine Gires
Mathilde Warnier plays Nadine Gires, a neighbour and friend to Charles and Marie-Andrée, who eventually teams up with Herman Knippenberg to bring the killers to justice. The French actress is known for her supporting roles in The Widow, Dynasty, and World on Fire.
© Photo: BBCMathilde Warnier as Nadine
The Serpent starts on BBC One on Friday 1 January, 9pm.
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