Ms Flint, who represented Don Valley for over 20 years and still lives in Doncaster filmed the show in Belfast in September 2020 and appeared on the programme to raise money for the charity Nacoa UK, which helps the children of alcoholic parents.
She also had to answer general knowledge questions, in the traditional format of the programme.
She was up against the naturalist Steve Backshall, radio presenter Noreen Khan, and comedian Rhys James, who answered questions on sharks, Marilyn Monroe, the US version of The Office.
The veteran broadcaster John Humphys was the quizmaster.
Ms Flint tweeted that her specialist subject was Ridley Scott's Alien and added: “You'll have to wait awhile to find out what happened.”
The programme is due to air at 5.45pm on Saturday, April 3.
Ms Flint, said she had always been a film buff and tweeted: “In #CelebrityMastermind, no one can hear you scream”.
She Flint took part to raise funds for the National Association for Children of Alcoholics (NACAO).
As an MP, Ms Flint, whose mother died of alcoholism, was a great advocate for families dealing with alcohol or substance misuse.
Said Ms Flint: “I love films, love Ridley Scott’s films and love the Alien movies.
“I joined the Labour Party in 1979, the year Margaret Thatcher got elected and Ellen Ripley (Sigourney Weaver) arrived on our screens in Alien. She became my hero.
“Choosing this film with one of my favourite heroes as my Mastermind subject was an easy choice. And NACAO is a great cause to support.”
In these confusing and worrying times, local journalism is more vital than ever. Thanks to everyone who helps us ask the questions that matter by taking out a subscription or buying a paper. We stand together. Liam Hoden, editor.