'Quiz' on AMC: The True Story of the 'Who Wants to Be A Millionaire' Cheating Scandal

Quiz, the new AMC Sunday night drama, tells a story that is one of the U.K's most famous television scandals, but is much less well known in America. In the AMC miniseries, we see Charles Ingram (played by Succession's Matthew McFadyen) in court with wife Diana (Fleabag's Sian Clifford) after they were accused of deception after producers claimed they had cheated during Charles' appearance on the British version of Who Wants to be a Millionaire?

A bit of background on the couple's history on the quiz show first. Charles found himself in the hot seat after both Diana and her brother Adrian Pollock (Trystan Gravelle) had already been on the show and had both won £32,000 (around $40,000 today).

The pair were both involved in a group called The Consortium (called The Syndicate in Quiz) which worked to rig the selection process for the show, and then act as the 'phone a friend' for the contestants they managed to get in the Millionaire chair.

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Sian Clifford as Diana Ingram, Matthew McFadyen as Charles Ingram and Michael Sheen as 'Who Wants to be a Millionaire' host Chris Tarrant in 'Quiz' AMC

On September 9 and September 10, 2001 (as the show points out, just prior to the 9/11 attacks in the U.S.), Major Charles Ingram filmed his two-part appearance, at the end of which he won the top prize of £1 million ($1.23 million).

However, producers were suspicious of how he had won, and his episode did not air. The makers of the show noticed, for one, that Charles had a habit of changing his answer to a right one at the last minute. For example, for a question where the correct answer was U.K. singer Craig David, he initially said he had never heard of him before eventually choosing him as the answer.

Crucially, these producers also noticed a series of coughs on the right answers of each questions, suggesting Charles was being led by an accomplice in the 'fastest finger first' chairs on the show. Specifically, the producers thought that Tecwen Whittock (Michael Jibson) was the one doing the coughs.

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The real-life Charles and Diana Ingram Scott Barbour/Getty Images

Eventually, Charles and Diana Ingram as well as Tecwen Whittock were arrested, and charged with procuring the execution of a valuable security by deception. One of the most audacious moments of Quiz comes when a coughing fit breaks out in the trial, but this is a genuine thing that happened in the case, and left the judge with no alternative but to suspend the session.

In April 2003, the Ingrams and Whittock were found guilty, with the former couple given an 18 month suspended sentence while Whittock was one of 12 month sentence. The couple were fined £15,000 ($18,500) and ordered to pay £10,000 ($12,000) towards the prosecution costs (which was later raised to £65,000 or $80,000). Charles was never given his £1 million prize money.

The same year he was found guilty of deception, Charles Ingram was also found guilty of insurance fraud. He has since had to declare bankruptcy four times.

Despite being found guilty, the Ingrams maintain their innocence in the Millionaire scandal. Charles Ingram, however, has admitted on Twitter that the story told in Quiz is "terrifyingly accurate and oh yes, horribly cringeworthy."

Quiz airs Sundays at 10 p.m. ET on AMC.