Warning, there are spoilers ahead for series one, episode four of BBC drama The Bodyguard.
Fans of the BBC drama Bodyguard were left reeling after Keeley Hawes' character, Home Secretary Julia Montague, was killed off.
Julia was injured in last week's bomb explosion and it was revealed in last night's episode that she had died from her injuries.
After hearing the news of her death, her bodyguard and lover David Budd, played by Richard Madden thought about killing himself, however he changed his mind as a murder probe was launched.
At the end of the episode he came under suspicion of having some involvement in the bomb attack.
The twist left viewers wondering how the thriller will continue, with TV critics assuming it will follow the hunt for the killer who caused the bomb blast.
Fans took to Twitter after the shocking episode. One wrote: "SHE ABSOLUTELY CANNOT BE DEAD I REFUSE TO BELIEVE IT [sic]"
Another added: "WHAT! Nooooo way. Can't believe this [sic]!"
Writer Jed Mercurio is known for killing off popular characters to rack up dramatic tension.
Mercurio also wrote BBC's hit drama Line Of Duty where Keeley Hawes' character, DCI Lindsay Denton, was also killed off.
Bodyguard David Budd has also been shown on screen to be hiding some secrets, making viewers wary of what his intentions with Julia actually are.
Speaking about the character, Mercurio said: "The show's premise is we don't know a whole lot about his motivations.
"He would appear to be a very highly respected and very proficient personal protection officer.
"But the idea is that actually, rather than protecting her, he may be involved in some conspiracy to do her harm."
It was also confirmed earlier last week that the series finale, episode six, will be 75 minutes long rather than 60, meaning viewers will have even more time to figure out David's intentions.
The first episode broke records for BBC's viewing figures, it had the highest launch figure for any new UK drama since 2006, across all channels.
The first episode, which aired over the August Bank Holiday weekend, took in a consolidated figure of 10.4 million and a huge 40.9% audience share, according to the BBC.
Episode five of the Bodyguard airs on BBC One on Sunday, 16th September at 9pm.