Line of Duty has fallen victim to huge spoiler blunder after a plot twist was accidentally shared online which revealed a famous actor had joined the cast of the hit BBC show.
After Sunday's dramatic episode, millions of viewers are on tenterhooks for what will come next, not least who DCI Jo Davidson's 'blood relative' is after they gave the fourth instalment of series 6 an epic cliffhanger.
Viewers have plenty of theories on who it might be, with bookies also sharing their odds, but while we all wait to find out, the face of a well known actor has appeared online in a clip.
The Sun reports that staff at BBC Maestro, which sells screen writing courses, were responsible and Line of Duty bosses are "incandescent" as the mishap.
BBC Maestro shares excerpts from the show on social media each week, with Jed narrating his thought process behind the plot but in the error saw users able to access a trailer for the Sunday April 18 episode, with a well known actor's face visible on screen as Steve Arnott shared a database as well as a short scene of them in action.
Rest assured, we won't spoil anything here but The Sun lists Robert Carlyle, Idris Elba, David Tennant, Riz Ahmed and even Bodyguard actor Richard Madden as potentials.
The new twist will throw plenty of fans off-guard, as they concentrate their thoughts on who the person with the DNA link to Jo Davidson is.
In the moments following THAT "mother of God!" ending, many viewers flocked to Twitter to share their theories and, just like many fans of the show, the top tip with bookmakers is notorious crime boss Tommy Hunter.
Second favourite with bookies Betfair is John Corbett, the popular character played by Stephen Graham, whose death rocked viewers in series 5.
Away from the Davidson bombshell, it has also been confirmed that Anna Maxwell-Martin will soon be back on Line of Duty as DCS Patricia Carmichael.
