There was a worrying Coronation Street twist on Monday night, but what did Nina and Summer see that left them so terrified?

Characters Nina Lucas and Summer Spellman were both high on LSD when they witnessed something shocking. Whatever it was left them screaming and crying, hiding out in Roy Cropper’s café.

The character has been seen joking around and a little out of it after taking LSD at a house party. But suddenly the mood switched, and we saw the girls fleeing and shouting out.

Coronation Street fans are convinced they have worked out why Nina Lucas and Summer Spellman were screaming and crying(Image: ITV)

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Something shocked them and left them panicked, as they questioned what to do next. It’s clear that whatever they witnessed or did was really bad, and involved someone else.

As the girls screeched and sobbed, shaking with terror, Nina said they needed “to go back”. Summer was adamant though they had to hide it out, refusing to return to the scene they had just left.

A petrified Nina told her: “You saw what happened,” knowing they had to do something. But Summer told her: “We can’t! Listen to me, I don’t know what…” before she pointed outside.

There was a worrying Coronation Street twist on Monday night, but what did Nina and Summer see?(Image: ITV)

She added: “We 100 percent cannot go back.” In that moment Nina completely broke down, screaming: “Oh God,” repeatedly before bursting into tears.

Summer was also shocked and emotional, hugging Nina to comfort her. It’s clear the girls have witnessed something scary and bad, but what has happened? Ahead of scenes revealing all, fans think they have rumbled the truth.

Some viewers think this could be the exit storyline of Aadi Alahan who is soon leaving the show. While fans did see him with Lauren Bolton back at the house after Lauren had fled, some fans wondered if he left again and may have been killed.

One theory is that the girls attacked someone as other fans wondered if they witnessed an attack by another person. A further theory suggested it was something to do with Kit Green or his mother Bernie Winter.

Taking to social media, one fan shared: “Aadi probably because he’s leaving the show.” Another said: “I think Summer and Nina find Aadi dead. I think he’s supposed to be leaving not sure as not seen it yet.”

Characters Nina Lucas and Summer Spellman were both high on LSD(Image: ITV)

A third viewer posted: “I mentioned this on another post saying I hope it’s not Aadi. I know he’s leaving but was hoping they left the door open for him.” A further comment suggested: “Maybe something to do with Kit.”

One fan reckoned: “I think it’s got something to do with Bernie, I could be way of the mark maybe she’s injured and someone hurt her.” Another theory said: “I think maybe something happened Dylan.” As for what actually happened, there were many guesses.

A tweet read: “I reckon that they saw someone get beaten up but more shocked of who it is! Under influence of LSD, unable to do anything!” Another post read: “Think they may have attacked someone.”

One more posted: “It ended Nina and summer done something terrible.” A final comment read: “I think something happened from them leaving the party to getting to Roy’s but what I don’t know. They wouldn’t react like that walking down the road something has to have happened.”