A lie starts to spiral out of control in new comedy.

Harry Potter‘s  Rupert Grint, actor and screenwriter Nick Frost (Shaun of the Dead) and Golden Globe winning American actor Don Johnson, are to star in new Sky Atlantic comedy, Sick Note – from David Walliams, Miranda Hart and Jo Sargent‘s production company, King Bert.

Created and written by Nat Saunders and James Serafinowicz, Sick Note is the story of Daniel Glass (Grint), a compulsive liar, who’s stuck in a failing relationship and a dead end job, where he is under the thumb of his irrepressible boss Kenny West (Johnson). And just when things couldn’t get any worse, he’s diagnosed with esophageal cancer. However, everyone starts to treat him better because of his diagnosis and suddenly Daniel finds he has a new lust for life. But then he finds out he was misdiagnosed by the most incompetent oncologist on Earth, Dr Ian Glennis (Frost) and that’s when Daniel has a big decision to make: come clean and go back to his old rubbish life, or keep this new information a secret and pretend to be ill. He decides to go for the latter but very quickly the lie spirals out of control and both Daniel and Dr Glennis have to spend all of their waking lives trying to prevent the truth from getting out.

Zai Bennett, Director of Sky Atlantic said: “We’re delighted to welcome the stellar cast of Rupert Grint, Nick Frost and Don Johnson to Sky Atlantic in this smart new original comedy.”

Jo Sargent, Managing Director at King Bert said: “We are thrilled that we are making Sick Note for Sky Atlantic. Nat and James have done a brilliant job creating an enticing and funny hook and I look forward to our stellar cast bringing their hilarious scripts to life”.

Sick Note is directed by Matt Lipsey (Little Britain, Psychoville) and is set to air on Sky Atlantic in early 2017.