Marvel star Kumail Nanjiani will appear in an upcoming murder mystery series at Netflix.

The Big Sick and Eternals actor will guest star in Murderville alongside protagonist Will Arnett. But there's a catch: Nanjiani won't be given the script of the episode and will have to rely solely on his improv skills.

Murderville stars Arnett as Senior Detective Terry Seattle, with the cast rounded up by Haneefah Wood as Chief Rhonda Jenkins-Seattle, Lilan Bowden as Medical Examiner Amber Kang, and Philip Smithey as Detective Darren 'Daz' Phillips.

kumail nanjiani at the mtv movie and tv awards 2019
Kevin Mazur/Getty Images for MTV

Related: Eternals credits scenes explained: What those major cameos mean for MCU's future

Like Nanjiani, all other guest stars will be kept in the dark about each episode's script until filming.

The celebrity guest star roster include Schitt's Creek protagonist Annie Murphy, talk show host Conan O'Brien, Community's Ken Jeong, former American footballer Marshawn Lynch, and Sharon Stone, recently seen in Ratched.

None of them has the faintest idea of what is going on and will have to solve the case with the help of Arnett's Seattle. However, it will be up to the guest star alone to reveal the killer's identity, with no assurance whatsoever that they will get it right.

The series is based on BBC Three's Murder in Successville and will consist of six episodes.

kumail nanjiani at the mtv movie and tv awards 2019
20th Century Studios
Kumail Nanjiani and Dave Bautista in Stuber

Related: Eternals ending explained: Delving into the big reveals of the MCU epic

Whatever Nanjiani will be up to in his episode, it won't be nearly as bad as what he considers being his worst movie fail: Stuber.

The action movie bomb was so bad that Nanjiani used it as the butt of a self-deprecating joke to encourage people to practice social distancing during the first lockdown in 2020.

After a writer on Twitter suggested cinemas announce they'd only be showing his Stuber to keep people away, Nanjiani proved he had some real sense of humour by writing: "Well, it worked the first time."

Eternals is now playing in US and UK cinemas.

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Stefania Sarrubba

Reporter, Digital Spy

Stefania is a freelance writer specialising in TV and movies. After graduating from City University, London, she covered LGBTQ+ news and pursued a career in entertainment journalism, with her work appearing in outlets including Little White Lies, The Skinny, Radio Times and Digital Spy

Her beats are horror films and period dramas, especially if fronted by queer women. She can argue why Scream is the best slasher in four languages (and a half).