Celebrity Traitors' new recruit Hannah Fry unveils her 'statistically, perfect approach to catching a traitor' after revealing she brought a spreadsheet into the castle

James Blunt was right when he said the Traitors would recruit their biggest threat and during Thursday's episode Hannah Fry was recruited to join Maya Jama and James Acaster as Traitors. However, earlier in the episode, viewers watched as the mathematician and broadcaster imparted her wisdom on Joe Lycett. She shared that she has a huge spreadsheet which she adds to every night and tracks all the possible combinations and universes of Traitors. And her method is inspired by none other than Alan Turing. In a video posted to her YouTube channel prior to the beginning of the series, Hannah explained her plan was to work out 'combinations of people would not work together as traitors'.She told fans: 'So, if you imagine all of the possible universes of all of the possible combinations of three traitors, and then all I've got to do is eliminate those possibilities one by one to hopefully lead me to the correct three people. Celebrity Traitors' new recruit Hannah Fry has unveiled her 'statistically, perfect approach to catching a traitor' after revealing she brought a spreadsheet into the castle In a video posted to her YouTube channel prior to the beginning of the series, Hannah explained her plan was to work out 'combinations of people would not work together as traitors''I should tell you I stole this method from Alan Turing. This is exactly how he approach to cracking the Enigma machine. 'He started off with the list of all of the possibilities and then eliminated everything that wouldn't work to sort of get him to the final answer.'Hannah explained the only problem with this theory is that there are 21 people -which means there is a total of 1,330 possible universes. Planning to ask to be a faithful, and stay a faithful, Hannah explained that means she can then eliminate a lot of those universes where she is included, which takes the total to 1,140. She also revealed she thinks it is unlikely Claudia would pick three traitors who are the same person, for example three comedians, or three young people etc. Hannah then uses this assumption to remove further combinations. The star explained that each day as someone is murdered and banished these universes can be eliminated. She then estimated that by day four, you're down to 72 universes, she added: 'I think that by day five, I think you'll be down to just a handful of potential universes. 'So now I've got this much smaller set of groups, which in theory, I mean, if this works, means that I should be getting quite close to who the traitors are by day five.'But her theory doesn't stop there. She then estimated that by day four, you're down to 72 universes, she added: 'I think that by day five, I think you'll be down to just a handful of potential universes However Hannah's efforts cannot be put to use anymore as the star is no longer playing as a Faithful, as she first assumed she would be, after she was recruited by Maya and James Hannah is also tracking who sits next to each other at breakfast, during the roundtable and in the car as she believes it would be unlikely for three traitors to ever be in the one car or sit together in a row. She explained: 'There might be two traitors in a car, sure, but I don't think you will ever have three. So if there are four people in a car, I get to delete four universes.'Hannah also revealed she has watched back every episode of both the civilian and the celebrity UK Traitors series and made pages of notes tracking traitor and faithful behaviour. She has then input this all into a spreadsheet and crunched the numbers to see if there were any 'statistically significant patterns in the way that traitors behaved,' she added: 'and it turns out there were some absolute gems in there.'However, Hannah's efforts cannot be put to use any more as the star is no longer playing as a Faithful, as she first assumed she would be. During Thursday's episode it caused both suspicion and confusion at breakfast, when both Hannah and Jerry Hall returned to breakfast – indicating a recruitment had taken place. Assuming she was a goner, Hannah was left shocked after she received the letter of recruitment. Attempting to act as normal as possible, Hannah now must try to continue to play 'as a Faithful' when she is really a Traitor. The Celebrity Traitors line-up 2026 Jerry HallJerry Hall, 70, rose to fame in the Seventies and became one of the era's most recognisable fashion icons Richard E GrantRichard E Grant, 69, is celebrated for his roles in everything from the cult classic Withnail & I to modern flicks such as Everybody's Talking About Jamie James BluntJames Blunt, 52, shot to global fame with his debut album and the hit single You're Beautiful Ross KempRoss Kemp, 62, who recently returned to EastEnders to reprise his role as hardman Grant Mitchell, is said to want to challenge himself Michael SheenMichael Sheen, 57, is celebrated for his incredible performances across stage and screen, particularly his work in Good Omens and The Queen Rob BeckettBest friend of fellow Traitors star Ranganathan, comedian Rob Beckett, 40, is known for his high energy and booming laugh Sharon RooneySharon Rooney, 37, is best known for her breakout role as Rae Earl in the acclaimed series My Mad Fat Diary Joanne McNallyJoanne McNally, 43, is known for her brutally honest humour and hilarious takes on dating, chaos and modern life Amol RajanJournalist and broadcaster Amol Rajan, 43, has carved out a successful career across major UK media, including radio and television King KennyKing Kenny, 29, is a content creator known for his prank videos and street-style social experiments Sebastian CroftSebastian Croft, 24, is best known for his breakout role as Ben Hope in the Netflix series Heartstopper Maya Jama Maya Jama, 32, is quickly becoming one of the UK's most popular stars and famously fronts Love Island Miranda HartMiranda Hart, 53, broke through with her hit sitcom Miranda, which became a resounding success and cemented her as a comedy legendRomesh RanganathanRomesh Ranganathan, 48, has been taking British TV by storm in recent years is known for his deadpan delivery James AcasterComedian James Acaster, 41, is good friends with Ed Gamble, who hosts The Traitors: Uncloaked. The duo present the hit food podcast Off Menu Bella RamseyBella Ramsey, 22, rose to fame as Lyanna Mormont in Game Of Thrones and gained global acclaim for their leading role in The Last Of Us Leigh-Anne PinnockLeigh-Anne Pinnock, 34, is known as a member of the girl group Little Mix, which found fame on The X Factor in 2011 Joe LycettFrom TV stunts to clever public pranks, Joe Lycett, 38, has built a reputation as one of Britain's most inventive comics Hannah FryMathematician and broadcaster Hannah Fry, 42, is known for turning complex data into engaging content for viewers Julie HesmondhalghJulie Hesmondhalgh, 56, is best known for her long-running role as Hayley Cropper in Coronation Street – the first transgender character in a British soap opera Myha'laMyha'la, 30, is known for her striking portrayal of brutal fintech expert Harper Stern in the HBO drama Industry