The series, adapted from Graham’s play of the same name, explores the story of the ‘coughing major’, which saw Charles (Matthew Macfadyen), Diana Ingram (Sian Clifford) and Tecwen Whittock (Michael Jibson) cheat their way to a million pounds on the quiz show Who Wants to Be a Millionaire?
The “audacious heist” took place in 2001, when Major Ingram was a contestant on the show and with the help of his wife Diana and accomplice Whittock, navigated the notoriously difficult quiz to win the top price.
Major Ingram was accused of using the coughs from Whittock and Diana to indicate to him the correct answers. Despite maintaining their innocence, in the subsequent court trial, the trio were found guilty and given suspended prison sentences.
The host of Who Wants to Be a Millionaire? Chris Tarrant is played by Michael Sheen and Helen McCrory stars as Sonia Woodley QC.
Quiz airs on ITV this April. Watch the trailer below: