If there's one thing the internet loves, it's a good mystery.

Throw in a slightly blurred, fleshy-looking photo and a politician, and it's even better.

On Tuesday, UK Parliament returned to the Palace of Westminster following its recess.

To mark the occasion Conservative MP Anna Soubry posted a (now deleted) tweet referencing last week's general election.

Tweet may have been deleted

She also shared a photo of the packed chamber. The picture was deleted less than an hour after she shared it, but we've included a screengrab below:

Notice anything funny about that photo?

BuzzFeedjournalist Jim Waterson did:

Tweet may have been deleted

Unsurprisingly, Twitter was more than happy to help him with his investigation.

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It's hard to tell exactly what's on his screen from the photo (it's not a high enough resolution), but one thing was certain: it didn't exactly looked politics-related.

Tweet may have been deleted

A couple of hundred retweets later, and Twitter was out in full force to help get to the bottom of the mystery.

Tweet may have been deleted

Tweet may have been deleted

For awhile, it looked like the mystery would remain unsolved. The image was frustratingly small, and Photoshop enhancement proved inconclusive.

Then, suddenly, someone dropped this in the replies:

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That photo was taken by Gordon Parks in 1958. Its title is "Showgirls Playing Chess Backstage". And if you compare that picture to the shapes on the MP's phone screen, it does indeed appear to match up.

We wanted to be 100% sure, though, so we got back in touch with the tweeter to ask how they found it.

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So there you go: despite the initial excitement, the outcome was a lot less thrilling: the MP was simply on Twitter, and he tapped on a photo that had been shared by @historylvrsclub.

Tweet may have been deleted

Still, it was fun while it lasted.