Corrie producer Stuart Blackburn has already teased the crash, which will be shown early in the new year.
He said: "Yes, coming up in the New Year, there is a real tragedy that's going to affect a dozen or so of our characters. Last year we had David and the car crash and of course that was a stunt, but it genuinely felt like it had come from story. It wasn't us suddenly deciding that we needed to do something spectacular to get the viewers.
"It's the same with what we're planning, because it'll come from a relatively long-running story. It is going to be spectacular and a little bit heartbreaking!"
There will be an Underworld Works outing in the New Year. They all head out in a mini-van driven by Steve McDonald but there's a crash and some of the factory workers will end up in hospital with one person in critical condition.
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