Line of Duty: Stephen Graham accidentally reveals spoiler during One Show appearance

Line of Duty is one of the most popular series on television at the moment, with millions tuning in to the BBC One crime drama every week. But those who aren't up-to-date better steer clear of the cast's promotional appearances if Stephen Graham's slip on The One Show on Wednesday is anything to go by.

Graham, who plays DS John Corbett on the show, joined Matt Baker and Angelica Bell ahead of Sunday night's series five finale. During his appearance, the hosts asked him how hard it is to keep the twists and turns a secret.

"For anybody who is into the series watching it, we will have no spoilers here," Bell assured viewers, before addressing Graham. "So, have you told anyone about the big secrets that will be revealed, or can you keep a secret?"

The 45-year-old then joked that he didn't know anything himself, so it's relatively easy not to blab. Baker wasn't buying it, replying: "Did you not ask? You didn't want to find out at all?"

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(left to right) Adrian Dunbar, Vicky McClure and Martin Compston attending a photo call for BBC One's Bodyguard at the BFI Southbank in London. Picture dated: Monday March 18, 2019. Photo credit should read: Isabel Infantes / EMPICS Entertainment.
(left to right) Polly Walker, Rochenda Sandall and Maya Sondhi at a photo call for Line of Duty, during the BFI and Radio Times Television Festival at the BFI Southbank, London.
File photo dated 18/03/19 of the cast and crew of BBC's Line of Duty, which has become the biggest show of 2019 so far, with more than 11 million people tuning in for the first episode of the new series.
Vicky McClure attending a photo call for BBC One's Bodyguard at the BFI Southbank in London. Picture dated: Monday March 18, 2019. Photo credit should read: Isabel Infantes / EMPICS Entertainment.
(left to right) Adrian Dunbar, Rochenda Sandall, Vicky McClure and Martin Compston attending a photo call for BBC One's Bodyguard at the BFI Southbank in London. Picture dated: Monday March 18, 2019. Photo credit should read: Isabel Infantes / EMPICS Entertainment.
LONDON, ENGLAND - MARCH 18: Rochenda Sandall attends the 'Line of Duty' photocall at BFI Southbank on March 18, 2019 in London, England. (Photo by John Phillips/Getty Images)
Vicky McClure and Martin Compton attending the National Television Awards 2018 held at the O2 Arena, London. PRESS ASSOCIATION Photo. Picture date: Tuesday January 23, 2018. See PA story SHOWBIZ NTAs. Photo credit should read: Ian West/PA Wire (Photo by Ian West/PA Images via Getty Images)
LONDON, ENGLAND - JUNE 07: (L-R) Martin Compston, Neil Morrissey, Craig Parkinson and Vicky McClure attend the South Bank Sky Arts Awards at The Savoy Hotel on June 7, 2015 in London, England. (Photo by John Phillips/Getty Images)
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"Look at the way I'm looking at you," Graham teased. "Am I lying or not?"

When it was clear they weren't going to get anything out of him regarding the upcoming episode, Baker and Bell quizzed Graham on fan interactions and asked whether people come up to him on the street to talk about Line of Dutyspecifically.

"I've been working, so I haven't been home that much," he began, before gesturing across his neck. "But people have been coming up to me in the street, and people have come up to me and gone: 'I hate the way you got your throat..."

Realising he may have just ruined a major plot point for those who haven't seen episodes four and five of the latest instalment yet, Graham cut himself off and grinned, "Yeah. They're really good. They just come up to me and say. 'Who's H?'"

Line of Dutyfollows Superintendent Ted Hastings (Adrian Dunbar), D.I. Kate Fleming (Vicky McClure), D.S. Steve Arnott (Martin Compston), as they attempt to discover the link between missing undercover officer Corbett and an enigmatic Organised Crime Group. It concludes on BBC One on Sunday 5 May at 9pm.

- This article first appeared on Yahoo

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