The 22-year-old model from Fife, Scotland, had barely settled in to the Spanish villa when the rug was pulled under her feet, after new girl Chloe Burrows' decision to recouple with Aaron Francis sent her packing.
At the time, fans thought there was no way ITV would actually send her home after such a short stint, questioning if she was in a secret villa, or if producers had plans to bring her back for Casa Amor.
And now, fans think they've found proof that their theory could be coming true.
Check out the evidence for yourself:
Taking to TikTok one viewer honed in on ITV's T&C's, and claimed to have found a clue that suggested she could be returning.
Sharing a video on the platform, user @islandoflove21 hinted that T&C's "suggested something".
"Love Island changing their T&C after last night's shock exit suggests something," they wrote, alongside two eye emojis.
While they're wrong about the terms and conditions changing - the actually haven't been tweaked since the series begun - the wording certainly leaves the door open for Shannon's return.
The terms and conditions read: "The producers of the programme may in their discretion reintroduce an islander seen in earlier stages of the competition who was previously evicted.
"The programme producers' decision will be final".
"They're deffo bringing her back in," wrote one fan on Twitter.
While another speculated: "They'll bring her back at casa amor".
"I deffo think this is happening," echoed a third.
As a fourth exclaimed: "I CALLED IT I LITERALLY CALLED IT".
Shannon has landed back in the UK since leaving the villa, but that doesn't mean she couldn't return to Majorca later in the season.
Posting a picture in a bikini on her Insta today, she told followers she was in London once more, writing:
"IM BACK EVERYONE! cannot believe the amount of support I've received I love every single one of you!!"
In an exit interview after leaving, Shannon admitted she wasn't happy to have been dumped so early.
She added that she would go back in the villa if she could.
Did you hear that Love Island bosses? You know what to do...
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