As EastEnders turns 35, fans have been told a character "won't make it through the night" in the soap's nail-biting Monday episode.
The BBC has released photos from the River Thames-set episode and says: "The Vic's boat party gets underway, but events take a dramatic turn when the Captain breaks the news there's been an incident on board.
"As everyone struggles to comprehend what's happened, chaos quickly ensues and one person won't make it through the night..."
The show's executive producer, Jon Sen, has promised that viewers are in for a week they will never forget.
"For our anniversary we wanted to entertain our audience on the iconic river which has heralded the start of the show for 35 years," he said.
"This unmissable week is destined to be exciting, gripping and heartbreaking - and will go down in EastEnders history."
EastEnders airs on RTÉ One and BBC One on Mondays, Tuesdays, Thursdays and Fridays.
